descendants of lizards that survived the asteroid. 小行星撞击之后 幸存的蜥蜴后代
but their avian descendants finally found a way. 但它们的禽类后代终于找到了办法
And their descendants are still at it today. 它们的后代 至今任保持着这样的行为方式
And it was flight that would help their descendants stay alive 在小行星撞击地球之后的时代
we can still find the descendants of those early supersocializers. 我们仍然可以找到 早期超级社会性动物的后代
And their billions of descendants... 以及他们的亿万后代