translation.en: The whole animal world today lives on a stockpile of bacterial oxygen that is cycled constantly through plants and algae, and their waste is our breath, and vice versa.
translation.zh: 现在的整个世界的动物生活在细菌库里， 在这里氧气能通过植物和藻类不断地循环， 它们消耗的正是我们呼出的东西， 反之亦然