457 篇文章
has not been felt for 66 million years.
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has not been felt for 66 million years. 已经是6600万年前的事了

What was once wild has been tamed
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What was once wild has been tamed 曾经的蛮荒已被驯服

our story could have been a short one
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our story could have been a short one 但如果表现不够出色

there have been more than 50 cycles of ice buildup and melt...
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there have been more than 50 cycles of ice buildup and melt... 已经发生50多次结冰融化的循环

Age-old enemies that have been locked in battle for millennia.
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Age-old enemies that have been locked in battle for millennia. 数千年来 这对宿敌一直缠斗不休

and have been hunting bison in America for more than 100,000 years.
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and have been hunting bison in America for more than 100,000 years. 其在美洲捕杀野牛的历史 已经超过10万年

it has been too warm for ice to form.
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it has been too warm for ice to form. 温度都太高 无法形成冰冻

What had been a slow cooling of the planet
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What had been a slow cooling of the planet 过去缓慢的地球降温

It's the chance he's been waiting for.
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It's the chance he's been waiting for. 等待已久的机会终于到来

Other survivors of the asteroid had also been evolving.
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Other survivors of the asteroid had also been evolving. 小行星撞击的其它幸存者也在进化