just as they were 15 million years ago. 与1500万年前别无二致
Fifteen million years ago, these giant marine cities 1500万年前 这些巨大的海洋城市
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
In the tropics, it took six million years, 在热带地区 经过六百万年
But just five million years after the asteroid, 但是在小行星撞击之后仅500万年
just a few million years after the impact, 在撞击发生后仅几百万年
they have ruled planet Earth for a staggering 150 million years. 它们已统治地球长达1.5亿年