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Precambrian

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剑桥词典

    from or referring to the earliest period of time , between about 4,600 and 543 million years ago, from when the earth was formed until the first simple forms of life appeared
    前寒武纪的（地质年代的最早阶段，迄今约46-5.43亿年前之间，自地球开始形成起至第一个简单形式的生命出现）
    Precambrian time 前寒武纪时代／时期
    Precambrian rocks 前寒武纪岩石

    the Precambrian

    noun [ 单数名词 ] uk

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    the Precambrian period of time
    前寒武纪时期 返回 Precambrian