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The inhabitants of these bustling communities may grow at speed
這些熙熙攘攘的生物群落生長速度雖然很快，
but their existence can also be short, for the vents do not erupt indefinitely.
不過存在的時間也可能很短，因為火山口的噴發(fā)是不確定的。
Suddenly, unpredictably, they may become inactive.
說不定突然間它們就會消失。
Nine months have passed at Nine North.
9個月后，北九地區(qū)。
What were only recently chimneys teeming with life have turned into cold, sterile mineral monuments.
火山口豐富的生物群現(xiàn)在只剩下了寒冷貧瘠荒涼的遺址。
Some eddy, deep in the Earth's crust diverted the volcanic energy elsewhere
地殼噴出的能量漩渦轉(zhuǎn)移到了別處，
and, an entire microworld was extinguished.
整個微觀世界也黯然失色。
In places, volcanoes have erupted to build great submarine mountains.
在有的地方，火山噴發(fā)后會形成巨大的水下山。
There are thought to be around thirty thousand such volcanoes
據(jù)估計海底共有30000座火山，
some, measured from the sea floor, are taller than Everest.
如果從海床開始算，甚至有一些比珠穆朗瑪峰還要高。
Sheer cliffs soaring to drowned volcanic peaks.
火山開鑿出來的絕壁一直延伸到山頂。
Powerful currents sweep up the mountains' flanks, transporting nutrients from deep water towards the summits.
帶著海底養(yǎng)分的強大的洋流與海底山相接，便順山而上。
The hard rock provides excellent anchorage for communities of great variety and stunning color.
堅硬的巖石給這些絢麗的共生種群提供了很好的停靠地點。
