Ken MacLeod - Engine of Light 3 - Engine City

VIP免费
2024-12-19 0 0 137.16KB 50 页 5.9玖币
侵权投诉
Engine City
Ken MacLeod
To Carol, with love
ACKNOWLEDGMENTS
Thanks to Carol, Sharon, and Michael, as always; to Andrew Greig for listening about
light-years; and to Farah Mendlesohn for reading and commenting on the first draft.
There is no middle path between these two, for a man must either be a free and true
commonwealth’s man, or a monarchical tyrannical royalist.
Kingly government governs the earth by that cheating art of buying and selling, and
thereby becomes a man of contention, his hand is against every man, and every man’s
hand is against him; and take this government at the best, it is a diseased government, and
the very city Babylon, full of confusion.
—Gerard Winstanley, The Law of Freedom in a Platform (1651)
Contents
prologue: states of mind
part one: the very city babylon
1 the advancement of learning
2 hardy man
3 rtfm
4 the modern prince
5 tidal race
6 bright star cultures
7 the modern regime
part two: the human as alien
8 new earth (political)
9 the hanging libraries
10 high strangeness incidents
11 lithomancer
12 rocket science
13 blood of spiders
14 the new moon’s arms
coda: state of play
Prologue: States of Mind
the god who later became known as the asteroid 10049 Lora, and shortly afterwards as
the ESA mining station Marshal Titov, was not unusual of its kind. Around the Sun, as
with most stars, gods swarm like flies around a sacrifice. Life arises from states of matter.
From some of these states of matter arise states of mind.
In the asteroids and cometary bodies the units of life were extremophile nanobacteria.
Regulating their ultra-cold molecular processes, the vanishingly tiny temperature
differentials, detecting the quantum signature of usable energy—over millions of years,
these and other selective advantages drove the development of delicate networks adapted
to processing information. Random variations in the effects of their activities on the
asteroid’s outgassings and on the glacially slow transport of mass within it were selected
for whenever they resulted in more stable orbits and fewer collisions. Increasingly
complex networks formed. Subjectivity flickered into being on trillions of separate sites
within each life-bearing asteroid or cometary mass.
Those within 10049 Lora found themselves in a society of other such minds, exchanging
information across light-hours. They had much to learn, and many to learn from. Billions
of years of evolutionary fine-tuning had given the cometary and asteroid minds an
exquisite sensitivity to the electromagnetic output of each other’s internal chemical and
physical processes.
Communication, exchange of information and material between cometary clouds, became
rumor that ran around the galaxy’s outer reaches, which ring like residential suburbs its
industrial core where the heavy elements are forged.
Just as minds are built from smaller information exchangers—neurons or bacteria or
switches—so from the vast assembly of intercommunicating minds within the asteroid
emerged a greater phenomenon, a sum of those minds: a god. It was aware of the smaller
minds, of their vast civilizations and long histories. It was also aware of itself and others
like itself. Its component minds, in moments of introspection or exaltation, were aware of
it. In moments of enlightened contemplation, which could last millennia, the god was
aware of a power of which it was a part: the sum of all the gods within the Solar System.
That solar god, too, had its peers, but whether they in their turn were part of some greater
entity was a subject on which lesser minds could only speculate.
On Earth, evolution worked out differently. On its surface, the multicellular trick took
off. Beneath the surface, the extremophile microorganisms that riddled the lithosphere
and made up the bulk of the planet’s life formed extensive interacting networks which
became attuned to the electromagnetic fields of the planet and its atmosphere. Constantly
disrupted by processes far more violent than those of the smaller celestial bodies, they
attained the level of symbolic thought, but never quite intelligence. Earth’s mind—
Gaia—was like that of a pre-verbal child or an animal. Its thoughts were dreams,
afterimages, abstractions that floated free and illuminated like sheet lightning.
The large squid of the genus Architeuthys, which men later called krakens, were the first
real intelligences on Earth, and the ones whose outlook on life was closest to that of the
gods. They communicated by varying the colored patterns of the chromatophores on their
skins. The minute electrical currents thus generated interacted with the electromagnetic
flux of the planet and were amplified by it to come to the cometary minds’ acutely
sensitive attention. Responses tickled back from the sky. As the gods began to make
sense of the squids’ sensoria—a research project which kept the equivalent of a billion
civilizations’ worth of scientists happily occupied for several centuries—they modified
their own internal models accordingly. The visible spectrum and the visual field burst
upon astonished inner eyes. Sight dawned for the gods, and enlightenment for the squid.
Mega-years of happy and fertile intellectual intercourse followed.
Towards the end of the Cretaceous period, alien ships emerged from nowhere. Their
occupants were warm-blooded, eight-limbed, eight-eyed, and furry. Celestial minds were
already familiar phenomena to them. They swarmed across the Solar System, cracking
memetic and genetic codes as they went. They talked to the gods with their noisy radio
systems, gibber, jabber, boasting in technical detail of the lightspeed drive and the
antigravity engine. Their discoid skiffs scooted through the skies of all the planets. They
flashed banks of lights at the kraken schools. They listened to the collective voice of the
Martian biosphere, which in all its long dying never rose above a sad, rusty croak.
They made friends. They found a promising species of small, bipedal, tailless dinosaurs
and fiddled with their genes. The new saurs were intelligent and long-lived. The octopods
taught the saurs how to fly skiffs. (Gaia took the saurs and skiffs into her dreams, and
spun shining images of them in plasma and ball lightning, but nobody noticed back then.)
They dangled the prospect of space travel before the kraken. Many of the squids pounced
at the chance. The octopods designed ships and skiffs; the saurs built them and flew the
skiffs; the krakens embraced the algorithms of interstellar navigation. Long ships, whose
pilots swam in huge aquaria, blinked away.
By this time, one thought in the baffled minds of the gods resonated from one side of the
Oort cloud to the other: KEEP THE NOISE DOWN! The radiation noise and the endless
blether of information were not the worst irritations. Despite all appeals, the octopods
persisted in digging on the surfaces of asteroids and comets. They itched like nits. Some
saurs and kraken began to see the gods’ point of view, but they were unable to convince
the octopods. The cometary minds made small, cumulative changes in their orbits,
nudging a metallic asteroid onto a trajectory that ended on the octopods’ single city and
brought the Cretaceous epoch to a cataclysmic close.
The destruction appalled even the gods. The octopods and their allies fled, while the saurs
and krakens who remained behind labored to repair the damage done. They still had
skiffs and ships. Laden with rescued specimens and genetic material, light-speed ships
traveled to the other side of the galaxy. The saurs selected a volume about two hundred
light-years across and seeded scores of terrestrial planets—some hastily and blatantly
terraformed—with the makings of new biospheres. Saurs and kraken settled the new
planets, originally as ecological engineering teams, later as colonists. Others returned to
the Solar System, to bring more species. The traffic was to continue for the next sixty-
five million years.
Echoes and rumors of other conflicts circulated around the galaxy. The kraken picked
them up from the gods in the newly settled systems and passed them on to the saurs. In
those multiple translations, subtleties were lost. Knowledge of the past became tradition,
then religion. Gradually, the saurs, in what they came to call the Second Sphere, diverged
from those in the Solar System. Meetings between the two branches of the species
became mute, and matings sterile.
In the Second Sphere, a quiet and contented civilization was held together by the kraken-
navigated starships that plied between its suns. It assimilated new arrivals at intervals of
centuries. Some fast, bright mammals increasingly reminded the saurs of the octopods.
Lemurs and lorises, apes and monkeys, successive species of hominid; bewildered,
furious bands of hunters, tribes of farmers, villages of artisans, caravans of missing
merchants, legions of the lost. The saurs’ patient answers to their frequently asked
questions became the catechism of a rational but zealous creed. Yes, the gods live in the
sky. No, they do not listen to prayers. No, they do not tell us what to do. Their first and
last commandment is: Do not disturb us.
Slowly, with the help of the saurs and the two other surviving species of hominid, the
transplanted humans built a civilization of their own, whose center was a city that never
fell.
For the gods in the Solar System, the human civilization of the Second Sphere was a
history too recent for them to have heard of. They knew only that the saurs’ snatch-
squads continued their work with ever-increasing caution as the human population grew.
The clutter of images generated by Gaia’s excitable response to the saurs’ presence
provided the perfect cover for their activities. The gods had real aliens to worry about.
The starships might bring back news from the Second Sphere a hundred thousand years
out of date, but they collected much more recent news in their occasional stops on the
way back. From these the gods learned that the octopods were a few tens of light-years
away, and heading toward the Solar System.
The god in 10049 Lora had already lived a long life when it and its peers noticed the
rising electronic racket from Earth. It volunteered to swing by for a closer look. It
absorbed the contents of the Internet in seconds, and then found, microseconds later, that
it was already out of date. It was still struggling with the exponential growth when the
European Union’s cosmonauts arrived. To them, it was a convenient Near-Earth Object,
and a possible source of raw materials for further expansion.
The humans had plans for the Solar System, the god discovered—plans that made the
past octopod incursion seem like a happy memory. But the coming octopod incursion
might be still worse. If the humans could expand into space without the devastatingly
profligate use of resources that their crude rocket technology required, an elegant solution
could be expected to the presence of both species of vermin.
Bypassing the local saurs, who were quite incapable of dealing with the problem, the god
scattered information about the interstellar drive and the gravity skiff across the Earth’s
data-sphere. Several top-secret military projects were already apparently inspired by
glimpses of skiff technology, but their sponsors unaccountably failed to take the hint. (In
their mutual mental transparency, the celestial minds found the concepts of lies, fiction,
and disinformation difficult to grasp.) The minds within 10049 Lora opened
communication with the cosmonauts on its surface, where the ESA mining station
Marshal Titov was giving the god a severe headache.
Having their computers hacked into by a carbonaceous chondrite came as a surprise to
the cosmonauts. In the sudden glut of information, they failed to notice the instructions
for a radical new technology of space travel until it was almost too late. Politics dictated
first that the contact should be secret, then that it should be public. Political and military
conflicts resulted in a mutiny on the station. Before the space marines of the European
People’s Army could arrive to suppress it, the cosmonauts built a lightspeed drive that
took the entire station away. They thought they had understood how to navigate it. They
had not. It returned to its default setting, and arrived at the Second Sphere.
Before their departure, one of the cosmonauts made sure that the instructions distributed
by the god would not be ignored, and could not be hidden. The gods approved. Soon the
noisy humans would be somebody else’s problem.
The Advancement of Learning
the jump is instantaneous. To a photon, the whole history of the universe may be like this:
over in a flash, before it’s had time to blink. To a human, it’s disorienting. One moment,
you’re an hour out from the last planet you visited—then, without transition, you’re an
hour away from the next.
Volkov spent the first of these hours preparing for his arrival, conscious that he would
have no time to do so in the second.
My name is Grigory Andreievich Volkov. I am two hundred and forty years old, I was
born about a hundred thousand years ago, and as many light-years away: Kharkov,
Russian Federation, Earth, in the year 2018. As a young conscript, I fought in the Ural
Caspian Oil War. I was with the first troops to enter Marseilles and to bathe their sore
feet in the waters of the Mediterranean. In 2040, I became a cosmonaut of the European
Union, and three years later made the first human landing on the surface of Venus. In
2046 I volunteered for work on the space station Marshal Titov, which in 2049 was
renamed the Bright Star. It became the first human-controlled starship. In it I traveled to
the Second Sphere. For the past two centuries I have lived on Mingulay and Croatan.
This is my first visit to Nova Terra. I hope to bring you . . .
What? The secret of immortality?
Yes. The secret of immortality. That would do.
Strictly speaking, what he hoped to bring was the secret of longevity. But he had formed
an impression of the way science was conducted on Nova Terra: secular priestcraft,
enlightened obscurantism; alchemy, philosophy, scholia. A trickle of inquiry after
immortality had exhausted hedge-magic, expanded herbalism, lengthened little but grey
beards and the index of the Pharmacopia, and remained respectable. Volkov expected to
be introduced to the Academy as a prodigy. Before the shaving-mirror, he polished his
speech and rehearsed his Trade Latin.
The suds and stubble swirled away. He slapped a stinging cologne on his cheeks, gave
himself an encouraging smile, and stepped out of the cramped washroom. The ship’s
human quarters were sparse and provisional. In an emergency, or at the owners’
convenience, they could be flooded. In normal operation, it was usual to travel in one or
other of the skiffs, which at this moment were racked on the vast curving sides of the
forward chamber like giant silver platters. The air smelled of paint and seawater; open
channels and pools divided the floor, and on the walls enormous transparent pipes
contained columns of water that rose or fell, functioning as lifts for the ship’s crew. Few
humans, and fewer saurs, were about in the chamber. Volkov strolled along a walkway.
At its end, a low rail enclosed the pool of the navigator. Eyes the size of beach balls
reflected racing bands of color from the navigator’s chromatophores and the surrounding
instrumentation. Wavelets from the rippling mantle perturbed the water. Lashing
tentacles broke the surface as they played over the controls.
Volkov was halfway up the ladder to the skiff in which he had spent most, and intended
to spend the rest, of the brief journey, when the lightspeed jump took place. The sensation
was so swift and subtle that it did not endanger his step or grasp. He was aware that it had
happened, that was all. In a moment of idle curiosity—for he’d never been within sight of
a ship’s controller at such a moment—he glanced sideways and down, to the watery
cockpit twenty-odd meters below.
The navigator floated in the middle of the pool. His body had turned an almost
translucent white. Volkov was perturbed, but could think of nothing better to do than
scramble faster up the ladder to the skiff.
The door opened and he stepped inside, rejoining his hosts. Esias de Tenebre stood
staring at the display panel, as though he could read the racing glyphs that to Volkov
meant nothing. Feet well apart, hands in his trouser pockets, his stout and muscular frame
bulked further by his heavy sweater, his shock of hair spilling from under his seaman’s
cap. Though in the rough-duty clothes that merchants traditionally wore on board ship, he
had all the stocky and cocky dignity of Holbein’s Henry—one who did not kill his wives,
all three of whom stood beside him. Lydia, the daughter of Esias and Faustina, lounged
on the circular seat around the central engine fairing behind her parents, returning
Volkov’s appeasing look with sullen lack of interest. Black hair you could swim in,
brown eyes you could drown in, golden skin you could bask in. Her oversized sweater
and baggy canvas trousers only added to her charm. The other occupant of the vehicle
was its pilot, Voronar, who sat leaning forward past Esias.
“What’s going on?”
The saur’s elliptical eyes spared Volkov a glance, then returned to the display.
“Nothing out of the ordinary,” said Voronar. His large head, which lent his slender
reptilian body an almost infantile proportion, tipped forward, then nodded. “We are an
hour away from Nova Terra.”
“Could you possibly show us the view?” said Esias.
“Your pardon,” said Voronar.
He palmed the controls, and the entire surrounding wall of the skiff became
pseudotransparent, patching data from the ship’s external sensors and automatically
adjusting brightness and contrast: Nova Sol’s glare was turned down, the crescent of
Nova Terra muted to a cool blue, its night side enhanced. Scattered clusters of crowded
lights pricked the dark like pleiads.
“That’s a lot of cities,” Volkov said.
Compared with anywhere else he’d seen in the Second Sphere, if not with the Earth he
remembered, it was.
“There’s only one that matters,” said Esias. He did not need to point it out.
Nova Babylonia was the jewel of the Second Sphere. Its millennia-old culture, and its
younger but still ancient republican institutions, made it peacefully hegemonic on Nova
Terra, and beyond. The temperate zones of Nova Terra’s continents were placid parks,
where even wildernesses were carefully planned landscape features. All classes of its
people were content. Academicians and artists assimilated the latest ideas and styles that
trickled in over the millennia from Earth; patricians and politicians debated cordially and
congratulated themselves on their fortune in knowing, and avoiding, the home world’s
terrible mistakes. Merchants traded the rare goods of many worlds. Artisans and laborers
enjoyed the advantages of a division of labor far wider than any the human species could
have sustained on its own. Emigration was free, but the proportion of emigrants
insignificant. The hominidae cheerfully tended and harvested the sources of raw
materials, and the saurs and krakens exchanged their advanced products and services for
those of human industry and craft. As an older and wiser species, the saurs were
consulted to settle disputes, and as a more powerful species, they intervened to prevent
any from getting out of hand.
The lights of Nova Babylonia shone just short of the terminator, and somewhat to the
north of the halfway point between the pole and the equator. Genea, the continent on
whose eastern shore the city stood, sprawled diagonally across the present night side of
the planet and southward into the day and the southern hemisphere. Its ragged coastline
counterpointed that of the other major continent, Sauna, a couple of thousand kilometers
west: the two looked as though they had been pulled apart and displaced, one northward,
the other south. Much of the southern and western part of Sauria was wrapped out of
sight around the other side of the planet, at this moment; in the visible part, even at this
distance, the rectangular regularity of some of its green patches distinguished
manufacturing plant from jungle and plain.
“Do any humans live in Sauria?” Volkov asked.
Esias shrugged. “A few thousand, maybe, at any one time. Short-term contract
employees, traders, people involved in travel infrastructure and big-game hunting.
Likewise with saurs in Genea—lots of individuals, no real communities, except around
the hospitals and health services.”
Hospitals and health services, yes, Volkov thought, that could be a problem.
“What about the other hominidae?”
“Ah, that’s a more usual distribution, except that they have entire cities of their own.”
Esias pointed; it wasn’t much help. “Gigants here, pithkies there. Forests and mines, even
some farming. More of a surprise than the cities, that; it’s only developed in the last few
centuries. They’ve always been herding, of course.”
As the ship’s approach zoomed the view, the city and its surroundings expanded and
sharpened. The immediate vicinity and hinterland of the city was a long, triangular
promontory, about a thousand kilometers from northwest to southeast and five hundred
across at its widest extent. It looked like a smaller and narrower India: an island that had
rammed the continent at an angle. Very likely it was—the ice of a spectacular and recent
mountain range glittered white across the join. The west coast of this mini subcontinent
was separated from the mainland of Genea by a semicircular sea, three hundred
kilometers across at its widest, its shore curving to almost meet the end of the promontory
just south of the metropolis. From the mountains sprang a dozen or so rivers whose
confluence channeled about halfway down to one major river, which flowed into the sea
near the tapered tip. The central, and oldest, part of Nova Babylonia was on an island
about ten kilometers long that looked wedged in that river’s mouth.
The city drifted off center in the view, then swung out of sight entirely as the ship leveled
up for its run into the atmosphere. Why the great starships approached on what resembled
a long, shallow glide path was unknown, and certainly unnecessary, but it was what they
always did. The air reddened around the ship’s field and, following another unnecessary
and invariable habit, its human passengers returned to their seats.
Volkov leaned on the rail of the open sea-level deck of the star-ship and gasped morning-
cool fresh air. The starship had, to the best of his knowledge, no air-recycling or air-
circulating mechanisms whatsoever, and after a couple of hours even its vast volume of
air grew slightly but noticeably stale. Around him, unregarded, the ship’s unlading went
on, bales into boats and sometimes into skiffs. The machinery that he had imported from
Mingulay and Croatan—marine engines and diving equipment, mostly—would be a
small fraction of the de Tenebres’ cargo, and that itself insignificant beside the wares of
the ship’s real owners and major traders, the krakens. Beneath him, the ship’s field
pressed down like an invisible, flexible sheet on the waves, flattening them to a waterbed
wobble. Under that rippling glassy surface, the krakens from the ship and from the local
sea flashed greetings to each other. Off to Volkov’s right, behind the bulk of the ship, the
sun was just up, its low full beam picking out the city, about a mile away across the
water, in rectangles of white glare and long triangles of black shade. Ten thousand years
of heaping one stone upon another had stacked the architectures of antiquity to the
heights of modernity. A marble Manhattan, massive yet soaring, it looked like something
from the mind of a Speer with humanity, or a Stalin with taste. The avenues that slotted
the island metropolis from east to west were so broad that Volkov could see the sky on
the far side through the one directly opposite him. Bridges, sturdy as ribs, joined both
shores to districts that stood, less grand only by contrast, on either bank.
Starships by the score dotted the broad estuary. Skiffs flitted back and forth between the
sound and the city like Frisbees in a park. Long-limbed mammals like flying squirrels—
this world’s equivalent of birds—skimmed the waves and dived for fish and haunted the
wakes of fishing boats in raucous flocks. Above the city, airships and gliders drifted,
outpaced and dodged by the flashing skiffs. Between the starships, tall junks and clippers
tacked in or out of the harbor and both branches of the river, and among them feluccas
darted, their sails like the fins of a shoal of sharks. At this distance, the city’s dawn din of
millions of wheels and feet rose in a discernible and gradually increasing hum.
For a moment the immensity and solidity of the place made Volkov’s heart sink. The
stone crescendo that rose before his face was like some gigantic ship against whose bow
history itself cleaved and fell back to slip along its flanks and leave a wake of churned
millennia. And yet ultimately it was only an idea that kept it afloat and forging forward, a
thought in millions of all-too-fragile skulls. Let them lose that thought, and in a year, the
place would sink. Volkov had set himself the harder task of raising it, and at that, he felt
weak.
He heard and smelt Lydia behind him, and turned as she stepped up to the rail. She gazed
hungrily at the city, transfixed.
“Gods above,” she said, “it’s good to see it again.” She smiled at him wryly. “And good
to see it hasn’t changed much.” Another, more considering, look at the city. “Except it’s
higher.”
“It’s impressive,” Volkov allowed.
“And you want to change it.”
Volkov jerked a thumb over his shoulder at the work being done behind them. “You’re
the revolutionaries,” he said. “Bring in enough books and ideas, and the city will change
itself. All I want to do is make sure it’s still there the next time you come back.”
He grinned at her, controlling his features. His heart was making him shake inside. “If I
believed in your people’s ideas of courtship, I would offer it for your hand. I would tell
Esias that I could take this city and lay it at your feet.”
Lydia, to his surprise, blushed and blinked. “That’s what Esias is afraid of,” she said.
She stared away, as though weighing the city, and the suggestion.
“Gregor offered more,” she added, “and he delivered it, too, but he didn’t want me after
all. No, I’m not open to that kind of offer. Not after that.”
“I see,” said Volkov. “I’ll just have to fall back on my fine physique and engaging
personality.”
Lydia laughed. “I can never tell if you’re joking or not.”
“Neither can I,” said Volkov in a gloomy tone.
She punched him lightly. “There you go again.”
He turned to her, with a smile to cover his confusion, and even more to cover his
calculation. He did not know how he felt, or what if anything his feelings meant. A few
weeks earlier, his affair with Lydia’s mother, Faustina, had come to a mutually agreeable
end. He got on best with women of his own apparent age, or older; preferably married, or
otherwise unlikely to form a permanent—and from his point of view, all too temporary—
attachment. He wasn’t in love with Lydia, or even infatuated with her. He didn’t think
about her all the time. But whenever he saw her, he felt an electric jolt inside him, and he
found it difficult to look away from her. It was embarrassing to find himself stealing
glances like some besotted youth, but there it was.
At the other end of the scale, almost balancing that, there was the knowledge that in terms
of Nova Babylonian—and Trader—custom, they were potentially good partners.
Marriage was a business, affairs an avowed diversion; issue, inheritance, and fortune the
only serious matters, over which geneticists and astrologers and matchmakers kept
themselves profitably occupied.
In between, at the balance point, he and Lydia had developed a sort of tempestuous
friendship, which every so often blew up in clashes in which his values and ideas
appeared to her as a jaded cynicism, and her passionately held ethics to him seemed
ancient prejudices, immaturely held. At the moment, their relationship was going through
one of its calmer patches. He didn’t know whether a squall would have been better. More
bracing, certainly; but there was no need to bring it on. It would come of itself soon
enough.
“Can we at least be friendly, for the moment?” She smiled back. “You may be sly,
Grigory Andreievich, but I do like you. Sometimes.”
The first skiff slid out of its slot in the rack and skimmed across the navigation pool and
摘要:

EngineCityKenMacLeodToCarol,withloveACKNOWLEDGMENTSThankstoCarol,Sharon,andMichael,asalways;toAndrewGreigforlis eningaboutlight-years;andtoFarahMendlesohnforreadingandcommentingonthefirstdraft.Thereisnomiddlepathbetweenthesetwo,foramanmusteitherbeafreeandtruecommonwealth’sman,oramonarchicaltyrannic...

展开>> 收起<<
Ken MacLeod - Engine of Light 3 - Engine City.pdf

共50页,预览10页

还剩页未读, 继续阅读

声明:本站为文档C2C交易模式,即用户上传的文档直接被用户下载,本站只是中间服务平台,本站所有文档下载所得的收益归上传人(含作者)所有。玖贝云文库仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对上载内容本身不做任何修改或编辑。若文档所含内容侵犯了您的版权或隐私,请立即通知玖贝云文库,我们立即给予删除!
分类:外语学习 价格:5.9玖币 属性:50 页 大小:137.16KB 格式:PDF 时间:2024-12-19

开通VIP享超值会员特权

  • 多端同步记录
  • 高速下载文档
  • 免费文档工具
  • 分享文档赚钱
  • 每日登录抽奖
  • 优质衍生服务
/ 50
客服
关注