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单词 Archean
释义

Archaean or (US) Archean /är-kēˈən/ (geology)

adjective

Of or belonging to the first eon of geological time, between approx 4500 and 2500 million years ago (also noun)

ORIGIN: Gr archaios ancient, from archē beginning
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更新时间:2025/2/10 23:59:46