| 单词 | 前寒武纪 |
| 释义 | 〔Archeozoic〕Of, belonging to, or designating the earlier of two divisions of the Precambrian era.早期前寒武纪（的）：前寒武纪的两期中较早的一期的，属于它的或以其命名的〔Precambrian〕Of, belonging to, or being the oldest and largest division of geologic time, preceding the Cambrian Period, often subdivided into the Archeozoic and Proterozoic eras, and characterized by the appearance of primitive forms of life. See table at geologic time 前寒武纪的：地质年代中最古老和最大的阶段的、属于这一阶段的或处于这一阶段的，其前为寒武纪期，寒武纪期又可细分为始生代和原生代，特征为原始生命形式的出现 参见 geologic time〔Proterozoic〕Of, belonging to, or being the later of two divisions of Precambrian time, during which sponges, sea worms, and other forms of sea life appeared.原生代的，元古代的：前寒武纪两个时期中的后一个时期的，属于这个时期的，在这个时期的在这个时期海绵、海洋蠕虫和其它形式的海洋生命出现〔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〔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 |
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