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proterozoic

/ˌprɒt.ər.əˈzoʊ.ɪk/

翻译: 指地质年代中的元古宙,约距今25亿年至5.41亿年前,以氧气积累和早期复杂生命形式出现为特征。, 地质年代术语,指元古宙,约距今25亿年至5.41亿年前的一段地质时期,以大气中氧气积累和早期复杂生命形式的出现为特征。

2 个条目

adjective

/ˌprɒt.ər.əˈzoʊ.ɪk/C2formalscientific
  • zh指地质年代中的元古宙,约距今25亿年至5.41亿年前,以氧气积累和早期复杂生命形式出现为特征。

Relating to the geological eon that lasted from about 2.5 billion to 541 million years ago, characterized by the buildup of oxygen and the emergence of early complex life forms.

  1. Geological eraC2formalscientific

    Relating to or denoting the later part of the Precambrian era, characterized by the first signs of simple life and the buildup of oxygen in the atmosphere.

    zh元古宙的

    • The Proterozoic eon spans from about 2.5 billion to 541 million years ago.
    • Proterozoic rocks contain evidence of early multicellular life.
    • Geologists study Proterozoic formations to understand Earth's ancient climate.

noun

/ˌprɒt.ər.əˈzəʊ.ɪk/C2formalscientific
  • zh地质年代术语,指元古宙,约距今25亿年至5.41亿年前的一段地质时期,以大气中氧气积累和早期复杂生命形式的出现为特征。

A proper noun referring to a specific geological eon, the Proterozoic, which spans from about 2.5 billion to 541 million years ago, characterized by the buildup of oxygen and the emergence of early complex life forms.

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  1. C2formalscientific

    The Proterozoic is a geological eon spanning from about 2.5 billion to 541 million years ago, characterized by the buildup of oxygen and the emergence of early complex life.

    zh地质宙

    • The Proterozoic eon saw the first significant rise in atmospheric oxygen.
    • Fossils from the Proterozoic are rare but include early multicellular organisms.
    • The Proterozoic ended with the Cambrian explosion of life.