研究人员一度以为，只有单细胞生物，如原核生物和原生动物，才能在深海缺氧环境中生活。

Researchers had thought that only single-celled organisms such as prokaryotes and protozoa could live in the oxygen-deprived environments of the deepest ocean.

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全球气候、区域降雨及河流正在逐渐被海藻类污染，缺氧引起鱼类死亡，影响当地居民的生活及休闲娱乐。

Many freshwater lakes and rivers were becoming contaminated by algae, starving them of oxygen and killing off fish, affecting local livelihoods and recreation for local populations.

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其中有些问题，与在外层空间生活时所遇到的一样，是压力。缺氧和失重现象。

Some of these problems, similar to those of living in outer space, are pressure, Lack of oxygen and weightlessness.

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