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Proterozoic

/.prɒtәrә'zәuik/

📖 中文释义

  1. n. 元古代, 元古代岩
  2. a. 元古代的, 元古代岩的
📘 English Definition（英文释义）
  1. n. from 2,500 to 544 million years ago; bacteria and fungi; primitive multicellular organisms
  2. s. formed in the later of two divisions of the Precambrian era
P 字母词表