• A million years ago, there were animals here before man came.

    一百万年前,在还没有出现人类以前这里就有动物

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  • Here's what scientists think happened, oh, about a hundred million years ago.

    科学家们如是说:一亿年前,有这么一个三恒星系。

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  • Thirty years ago, there were half a million deaths from childbirth each year.

    30年前每年分娩死亡的产妇50万人。

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  • About 300 million years ago, this was a Marine salt layer.

    三亿年前这种海洋

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  • SOME 16 million years ago, north became south in a matter of years.

    年前北方短短年内变成南方

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  • SOME 16 million years ago, north became south in a matter of years.

    年前北方短短年内变成南方

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