| 单词 | Proterozoic |
| 释义 | Word Frequency Proterozoic(ˌprəʊtərəʊˈzəʊɪk) noun 1. the later of two divisions of the Precambrian era, during which the earliest plants and animals are assumed to have lived Compare Archaeozoic adjective 2. of or formed in the late Precambrian era |
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