Precambrian
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 ] ukYour browser doesn't support HTML5 audio
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the Precambrian period of time
前寒武纪时期 返回 Precambrian