Proterozoic

形容词 adj. 专有名词
中文释义
英 /ˌpɹɒt(ə)ɹəˈzəʊɪk/|/ˌpɹɒt(ə)ɹəʊˈzəʊɪk/    美 /ˌpɹoʊt(ə)ɹrəˈzoʊɪk/|/ˌpɹoʊt(ə)ɹoʊˈzoʊɪk/

英文释义

形容词 adj.
  1. Of or relating to the geologic eon from 2,500 Ma to 541.0±1.0 Ma. not-comparable
专有名词
  1. The eon from 2,500 Ma to 541.0±1.0 Ma, the beginning of the Phanerozoic, marked by the build up of oxygen in the atmosphere and the emergence of primitive multicellular life.

词源

词源 1
From protero- + -zoic.
词源 2
From protero- + -zoic.
0 次浏览 数据来源: Wiktionary