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1800 篇文章
The descent from the treetops to a life on the forest floor.
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The descent from the treetops to a life on the forest floor. 从树上下到森林地面生活

not least on one group of animals...
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not least on one group of animals... 尤其是对这一类动物

The impact on life was huge,
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The impact on life was huge, 这对生命影响巨大

On its own, a snowflake is a fragile, frozen wonder.
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On its own, a snowflake is a fragile, frozen wonder. 雪花本身就是一个脆弱的冰冻奇迹

Such is the role of chance in the history of life on our planet.
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Such is the role of chance in the history of life on our planet. 这就是机遇在地球生命历史中 所扮演的角色

The mammals have conquered every habitat on Earth.
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The mammals have conquered every habitat on Earth. 哺乳动物征服了地球上每一片栖息地

hot on the tail of the female.
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hot on the tail of the female. 对雌鲸穷追不舍

But unlike whales, they still spend much of their time lazing on land.
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But unlike whales, they still spend much of their time lazing on land. 但与鲸不同 它们多数时间仍懒洋洋地躺在陆地上

But the leopard's legacy lives on.
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But the leopard's legacy lives on. 但这只雪豹的遗志会传承下去

learning the skills needed to survive on the very edge of life.
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learning the skills needed to survive on the very edge of life. 学习在生命边缘生存所需的技能