bison became the focus of another group of survivors. 野牛成为另一群幸存者的重点目标
Other survivors of the asteroid had also been evolving. 小行星撞击的其它幸存者也在进化
But thanks to the few survivors of the dinosaur family tree, 但由于恐龙族谱中的少数幸存者
offered opportunity to a wealth of survivors. 为众多幸存者提供了机遇
Birds had turned from mere survivors into predators. 鸟类从幸存者变为捕食者
These survivors were kept warm by feathers... 这些幸存者靠羽毛保暖
Survivors were protected by burrows... 保护幸存者的有洞穴
and the rise from the ashes of the survivors 以及幸存者从灰烬中崛起的故事
but turbocharging evolution for the survivors... 但也加速了幸存者的进化