With a head like a pickaxe and standing two and a half meters tall, 骇鸟的头像锄头 站立高达2.5米
And in early South America, 46 million years after the asteroid, 在早期的南美 小行星撞击的4600万年后
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
was built on the close relationship between flowers and their insect pollinators. 以花与昆虫授粉者的密切关系为基础
The asteroid had wiped out three-quarters of all Earth's plant and animal species. 小行星 令地球上四分之三的动植物物种灭绝