Oxygen use produces oxygen-free radicals that can destroy an organism.

氧消耗可以产生氧自由基，其可以引起机体破坏。

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Scientists don't yet fully understand the biochemistry - but the discovery opens the possibility of complex life forms on oxygen-free planets.

科学家们还未完全掌握这一生物化学过程，但是此次发现开启了无氧行星上有复杂生命形式存在的可能性。

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Scientists don’t yet fully understand the biochemistry—but the discovery opens the possibility of complex life forms on oxygen-free planets.

科学家尚不完全理解具体的生化原理，但这项发现却揭示了无氧行星存在复杂生命形式的可能性。

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So studying the organisms in these oxygen-free caves gives clues about the past.

VOA: special.2010.11.10

But vintage ports, made only in a few top years, are bottled early on and mature sloooowly in their oxygen-free glass-and-cork environment.

FORBES: Wine & Spirits

In an oxygen-free (anaerobic) environment at a certain temperature, pH and salinity, the bacteria can produce a toxin that in very small amounts can cause life-threatening paralysis.

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Still, we bet people still fall for the hype -- oh hey, if you're looking for the ultimate in sound, we've got half a meter of oxygen-free, triple-wrapped double-insulated Sonically Shielded AmpliSized Egyptian Llama cable here that we'll part ways with for just a couple grand.

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