- The earliest animals to attain supremacy
最早实现统治地位的动物 - were simple life forms.
是简单的生命形式 - These invertebrates, animals without backbones,
这些无脊椎动物 - ruled the seas for many millions of years.
统治海洋数百万年 - Throughout history, life has been waging an unending war.
在历史的长河中 生命一直在进行无尽的战争 - One dynasty rising,
一个王朝崛起 - only to be vanquished by the next.
结果却被下一个王朝征服