| 单词 | 前寒武纪时代 |
| 释义 | DEFINITIVE EXAMPLES 权威例句〔Archean〕Of or relating to the oldest known rocks, those of the Precambrian era, that are predominantly igneous in composition.太古代的：所知的最古的前寒武纪时代岩石，其组成成分主要为火成岩的，或与之相关的美国传统〔Precambrian〕Precambrian time 前寒武纪时代／时期剑桥高阶〔Precambrian〕The Precambrian Era.前寒武纪时代美国传统〔craton〕A large portion of a continental plate that has been relatively undisturbed since the Precambrian era and includes both shield and platform layers.稳定地块：一块大范围的大陆板块，从前寒武纪时代以来就一直是相当宁静的，包括盾状物和平台层美国传统 |
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