Cryogenian

词形变化

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释义与例句

adj.
  1. 1.

    Of a geologic period within the Neoproterozoic era from about 850 to 600 million years ago.

    地质
name
  1. 1.

    The Cryogenian period.

    地质

词源

From cryogenic (“of low temperature”) + -ian.

来源：wiktionary