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在寒武纪生命大爆发期间,主要模式转化只用了数千万年的时间。
During the Cambrian explosion, major paradigm shifts took only tens of millions of years.
youdao
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在寒武纪生命大爆发期间,主要模式转化只用了数千万年的时间。
During the Cambrian explosion, major paradigm shifts took only tens of millions of years.
youdao