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2047 篇文章
but these are animals...
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but these are animals... 但这些动物

Most are soft-bodied and rooted to the seafloor.
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Most are soft-bodied and rooted to the seafloor. 多数为软体且根植于海底

are now extinct.
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are now extinct. 99%已经灭绝

The siblings are faster than their mother.
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The siblings are faster than their mother. 两只幼龙比母亲更快

until they are big enough to join the rest of the herd.
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until they are big enough to join the rest of the herd. 直到它们长大到足以加入龙群

These are Maiasaura,
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These are Maiasaura, 这些是慈母龙

But it's not just those doing battle that are always changing.
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But it's not just those doing battle that are always changing. 但不断变化的 不仅仅是参与战斗的生物

other butterflies adapt to only lay on plants that are free of eggs...
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other butterflies adapt to only lay on plants that are free of eggs... 其他蝴蝶进行进化 只在没有卵的植物上产卵

And yet, they are just 1% of all species that have ever existed.
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And yet, they are just 1% of all species that have ever existed. 但这只是曾经存在过的物种中的1%

There are more than ten million species of plant and animals alive today.
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There are more than ten million species of plant and animals alive today. 如今 超过1000万种动植物 生活在地球上