- And other life-forms could develop.
其他生物得以发展 - It is life that altered the atmosphere.
是生命改变了大气 - Plant life fed off the sun's energy,
植物以太阳能为生 - Which enabled it to break apart the water molecule...
这使它能够分解水分子 - And take the oxygen.
从中产生氧气 - And oxygen filled the air.
从此 空气中出现了氧 - The earth's water cycle is a process of constant renewal.
地球的水循环是一个持续更新的过程