2384 篇文章
that one would not expect it to contain any life whatsoever.
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that one would not expect it to contain any life whatsoever. 不管什么生物似乎都不可能在那里生存

External gills help it to breathe in water that is particularly low in oxygen.
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External gills help it to breathe in water that is particularly low in oxygen. 外生的鳃帮助它们 在极度缺氧的水中呼吸

And the Belizean white crab is another creature that is unique to just one cave system.
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And the Belizean white crab is another creature that is unique to just one cave system. 而伯利兹白蟹是另一个 洞穴生态系统中的特有物种

troglodytes, animals that never emerge from the caves or see daylight.
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troglodytes, animals that never emerge from the caves or see daylight. 穴居动物——从不出洞并且 永远不见天日的动物

This is the price that these cave commuters must pay
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This is the price that these cave commuters must pay 这是洞栖动物必须付出的代价

Small wonder then that there are other cave dwellers that stay put.
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Small wonder then that there are other cave dwellers that stay put. 难怪其它洞穴生物 要终生居住在洞穴中

but they could never have known that these flooded passageways were actually the beginning of subterranean rivers,
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but they could never have known that these flooded passageways were actually the beginning of subterranean rivers, 但他们从不知道这些水下通道 其实是地下河的入口

and that could be fatal.
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and that could be fatal. 而这将导致送命

a technique that has been used here, in Mexico, to chart the largest underwater cave in the world -
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a technique that has been used here, in Mexico, to chart the largest underwater cave in the world - 在墨西哥的这个地方 这种科技被用来 测绘世界上最大的地下水洞

that we've come to appreciate the full significance and scale of these flooded passageways.
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that we've come to appreciate the full significance and scale of these flooded passageways. 我们才能完全了解 这些地下水道的重要性及其规模