90 篇文章
Time to take a different approach.
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Time to take a different approach. 是时候换一种方法了

they are different to those of other fish.
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they are different to those of other fish. 叶鳍与其他鱼的鳍不同

...which has evolved in countless different directions.
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...which has evolved in countless different directions. 这种结构向无数不同方向进化

escaping predation required a different approach.
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escaping predation required a different approach. 逃避被捕食需要一种不同的方式

Triceratops is very different to the defenseless Maiasaura.
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Triceratops is very different to the defenseless Maiasaura. 三角龙 与无防御能力的慈母龙非常不同

At four different times,
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At four different times, 在四个不同的时期

until eventually, one will be so different to its predecessors
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until eventually, one will be so different to its predecessors 直到最终与其祖先截然不同

But each has a different combination of genes
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But each has a different combination of genes 但每一颗都具有不同的基因组合

but all with totally different origins.
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but all with totally different origins. 但起源完全不同

Two million years ago, and our planet is a very different place.
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Two million years ago, and our planet is a very different place. 200万年前 我们的星球与现在完全不同