The asteroid strike had allowed the mammals to go from lowly underdogs... 小行星撞击 使哺乳动物从卑微的弱者…
The males stay as close to the female as possible 雄鲸尽可能靠近雌鲸
humpback males exploit this ability to the full... 众多雄性座头鲸会充分利用这项能力
...allowing the whales to generate sustained bursts of energy. 所以能够产生持续的能量爆发
allowing the giants of today to evolve. 使如今的巨兽得以进化
Mammals had a long way to go to become masters of the world's oceans, 哺乳动物想要成为海洋的主宰 还有很长的路要走