成冰紀
释义
the Cryogenian period (part of the Neoproterozoic era, spanning from 850 to 635 million years ago)
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the Cryogenian period (part of the Neoproterozoic era, spanning from 850 to 635 million years ago)
Know this word better than we do? Language is a living thing — help us keep it growing. Collaborate with Babel Free