That's because of scavenging bacteria, which ate the dead cyanobacteria and consumed all the oxygen.

那是因为食腐细菌吃掉了死去的蓝藻并消耗了所有的氧气。

All the creatures that consume oxygen keep consuming it, and the overall amount of oxygen dissolved in the water becomes critically low.

消耗氧气的所有生物会继续消耗氧气，而水中溶氧总量会急剧减少。

Then here's how to calculate it, I replied. In one hour each man consumes the oxygen contained in 100 liters of air, hence during twenty-four hours the oxygen contained in 2,400 liters.

下面就是对于这问题的算法，我回答，每个人每小时消费一百升·空气中含有的氧，二十四小时就消费二千四百升含有的氧。