| 单词 | Proterozoic |
| 释义 | Proterozoic /prot-ə- or prō-tə-rō-zōˈik/ (geology)adjectiveOf or belonging to the most recent eon of Precambrian time, between 2500 and 540 million years ago, orig Lower Palaeozoic (also noun) ORIGIN: Gr proteros earlier, and zōē life |
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