just a few million years after the impact, 在撞击发生后仅几百万年
global temperatures plunged by a staggering 25 degrees. 全球气温骤降25度
a behavior that ensures the survival of the fittest. 这种行为能够确保最优秀者生存下来
They also drew on a rather flamboyant ancient behavior, 它们还依赖于 一种相当引人注目的古老行为
...and created a new kind of flight. 并创造出一种新的飞行方式
But one group of animals has found a way to survive here. 但有一群动物 找到了在这里生存的方法
a landscape where almost nothing can live. 几乎没有生物能在这里生存