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单词 Cambrian
释义 Cambrian
['kæm.bri.ən] adjective
■from or referring to the period of geological time between about 543 and 490 million years ago, in which many different types of invertebrate (= without any backbone) animals first appeared 寒武纪的(寒武纪,距今约5.43亿至4.9亿年前的地质时期,无脊椎动物开始大量出现)
The Cambrian era/period寒武纪时期
Cambrian rocks寒武纪时期的岩石
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