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
Although they had conquered the land, 虽然哺乳动物征服了陆地
there rose from the ashes a life-form that had previously only survived 一种此前只在边缘地带幸存的生物
the warm, wet conditions in which they had thrived began to change. 曾令它们兴旺发展的暖湿条件 开始发生变化
able to hide in holes, had survived. 藏在洞中 幸存下来
The asteroid had inflicted devastating losses on the mammals... 小行星碰撞 对哺乳动物造成毁灭性的打击
forests had regrown and carpeted much of the land. 森林已重新生长并覆盖大部分陆地
But one remarkable dynasty has had a greater impact than any other. 但有一个非凡的王朝 比其他任何王朝都更具影响力
Other survivors of the asteroid had also been evolving. 小行星撞击的其它幸存者也在进化