512 篇文章
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

a mammal armed with more intelligence and adaptability than any before.
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a mammal armed with more intelligence and adaptability than any before. 一种哺乳动物 拥有史上最强的智力和适应性

But there is one more chapter in the mammal story still to be told.
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But there is one more chapter in the mammal story still to be told. 但是哺乳动物的故事 还有一章仍待讲述

This is much more than about speed.
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This is much more than about speed. 这不仅仅是速度的问题

they use oxygen far more effectively than Maiacetus.
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they use oxygen far more effectively than Maiacetus. 它们利用氧气的效率远高于慈母鲸

and able to breathe once more.
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and able to breathe once more. 又能呼吸了

the skies belong to the bats once more.
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the skies belong to the bats once more. 天空再次归蝙蝠所有

The calf is safe once more...
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The calf is safe once more... 幼崽又安全了

it became a harsher, more difficult place to live.
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it became a harsher, more difficult place to live. 它成为了 一个更恶劣、更难以生存的地方

Food became more spread out,
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Food became more spread out, 食物变得更分散