These sediments were anoxic, or poor in oxygen, and they were also full of hydrogen sulfide.

这些沉积物是缺氧的或含氧量很低的，并且它们充满了硫化氢。

Like, in this case, it connects the hydrogen sulfide reducers in anoxic sediment with oxidizers closer to the surface.

同样，在这种情况下，它将缺氧沉积物中的硫化氢还原剂与面的氧化剂连接起。

As a result, the ocean becomes oxygen poor, or hypoxic, or even anoxic, where there's no oxygen left.

结果，得缺氧，或缺氧，甚至缺氧，那里没有氧气。

Two years ago in a former anoxic silt deposit I have found animal bones from between 275 and 1300 AD.

两年前，我在一个以前缺氧的淤泥沉积物中发现了公元 275 年至 1300 年之间的动物骨头。

The conditions are often swampy or anoxic, so no oxygen, and this prevents rotting and predation by other animals and scavengers.

条件通常是沼泽或缺氧，所以没有氧气，这可以防止其他动物和清道夫的腐烂和捕食。

To live in this environment, some bacteria have adapted to produce enzymes that still function at very high temperatures, and others even respire nitrogen instead of oxygen so they can tolerate anoxic conditions.

为了在这种环境中生存，一些细菌已经适应了产生在高温下仍能起作用的酶，还有一些细菌甚至呼吸氮气而不是氧气，这样它们就能忍受缺氧条件。