...has produced the huge diversity that exists today. 产生了现存的巨大的生物多样性
As long as the earth exists, the sun's energy will be inexhaustible. 只要地球存在 太阳能就是取之不竭的
And exists only through the existence of another being. 只能通过其他事物的存在而存在
..where life exists on a knife edge... 生命如履薄冰
But it exists at the very limits of survival. 这里的生命时时刻刻处于危机之中
Earth is the only planet we know of where life exists. 地球是人类已知的唯一存在生命的星球
Home to the biggest animal that exists 是现存的最大动物
So, beyond the farthest reach of the Sun's power a rich independent community exists, 即使在没有太阳的能量驱动, 也会诞生丰富的共生动物群
What little food exists is so dispersed 仅有的少量食物也非常分散