122 篇文章
The downpours lasted more than a million years...
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The downpours lasted more than a million years... 倾盆大雨持续了超过100万年

that even after 200 million years...
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that even after 200 million years... 以至于即便经过了两亿年

In the four million years since the Permian extinction...
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In the four million years since the Permian extinction... 二叠纪灭绝之后的400万年中

252 million years ago...
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252 million years ago... 2.52亿年前

Sixty million years after the evolution of the amniotic egg,
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Sixty million years after the evolution of the amniotic egg, 进化出蛋之后6000万年

amphibians have survived for over 350 million years.
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amphibians have survived for over 350 million years. 但两栖动物已在地球上生存 超过3.5亿年

More than 300 million years ago,
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More than 300 million years ago, 3亿多年前

345 million years later,
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345 million years later, 3.45亿年之后

which they ruled undisturbed for the next 40 million years.
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which they ruled undisturbed for the next 40 million years. 在之后的4000万年 不受滋扰地统治着陆地

and Dunkleosteus had reigned for 20 million years.
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and Dunkleosteus had reigned for 20 million years. 邓氏鱼已经统治了2000万年