| 词汇 | Precambrian |
| 释义 | Precambrian adjective geology specialized uk/ˌpriːˈkæm.bri.ən/ us/ˌpriːˈkæm.bri.ən/ 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） 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 Precambrian time 前寒武纪时代／时期 Precambrian rocks 前寒武纪岩石 The silvery Precambrian quartzite is some of Australia’s oldest exposed rock.
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