The mammals had gone from tiny land animals... 哺乳动物从微小的陆地动物
but their tiny cousins had recolonized them 但它们的小表弟以一种全新的方式
For tiny mammals, nowhere is safe. 对于小型哺乳动物来说 哪里都不安全
This allows tiny hatchlings to grow 这使小小的幼崽能够长大
...their tiny filaments helped to break down rock 它们的细丝帮助将岩石分解
But Dunkleosteus has a weapon its tiny ancestors did not. 但是邓氏鱼 拥有自己微小祖先所没有的武器
a descendant of the tiny Arandaspis. 是微小的阿兰达甲鱼的后代
But what it produced was a tiny single living cell. 但它产生了一个微小的单细胞生命体