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Precambrian eon

[网络] 前寒武纪宙;之地质时代统称先寒武

网络

双语例句

  • That history began with the origin of the primitive, unicellular aquatic algae of the Precambrian Eon.
    最初,前寒武纪出现原始的单细胞水生藻类,除了蓝绿藻和细菌之外。