有机物可能会进行部分分解，并耗尽沉积物中的溶解氧。
The organic matter may partially decompose, using up the dissolved oxygen in the sediment.
之后，他们说，随着大部分生命的死亡，尸体的分解过程会消耗掉海水中的溶解氧，并导致多数生还者窒息而死。
Then, they say, after most life died, decomposition would have robbed the water of its dissolved oxygen, smothering many of the survivors.
河流本身有处理废水的能力：健康河流中的溶解氧会消化细菌。
The river has its own natural capacity to treat waste: dissolved oxygen in a healthy river digests bacteria.
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