On earth bacteria thriving in oxygen starved environments like sewers and intestines produce the gas phosphine.

在地球上，细菌生长在缺氧的环境中，如下水道和肠道，产生气体磷化氢。

And here's the best thing about phosphine.

这是磷化氢最好的地方。

But phosphine gas is produced on earth at least by bacteria that don't need oxygen.

但是磷化氢气体在地球上至少是由不需要氧气的细菌产生的。

And of course, I'll keep looking for the strange and scary biosignatures like phosphine.

当然，我还会继续寻找像磷化氢一样奇怪又可怕的生物印记。

So we don't really expect to find phosphine on Earth at all.

所以我们其实完全不期待在地球上找到磷化氢。

So I started considering what telescopes we would need to detect phosphine on planets in our galactic neighborhood.

所以我开始考虑我们需要用什么样的望远镜检测我们银河系附近行星上的磷化氢。

And my favorite of those unusual molecules is phosphine.

我最喜欢的不寻常分子是磷化氢。

Find phosphine and you've maybe found alien life.

找到磷化氢， 你也许就找到了外星生命。

The gas is phosphine, a toxic molecule with an odor of garlic and dead fish.

这种气体是磷化氢，一种带有大蒜和死鱼气味的有毒分子。

Indeed, phosphine seems to be safely and enthusiastically produced in all of these oxygen-poor ecosystems.

确实，看似磷化氢在这些氧气稀薄的生态环境中安稳且肆无忌惮地被制造出来。