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precambrian period

/priːˈkæmbriən ˈpɪəriəd/

翻译: 地球历史上最早、最长的时期,约从46亿年前地球形成到5.41亿年前寒武纪开始,以地壳形成、原始生命出现和缺乏复杂多细胞生物为特征。

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phrase

/priːˈkæmbriən ˈpɪəriəd/C1formalscientific
  • zh地球历史上最早、最长的时期,约从46亿年前地球形成到5.41亿年前寒武纪开始,以地壳形成、原始生命出现和缺乏复杂多细胞生物为特征。

The earliest and longest part of Earth's history, spanning from the formation of the planet about 4.6 billion years ago to the beginning of the Cambrian Period around 541 million years ago, characterized by the formation of the Earth's crust, the emergence of primitive life forms, and the absence of complex multicellular organisms.

  1. Geological time periodC1formal

    The earliest part of Earth's history, spanning from the formation of the Earth about 4.6 billion years ago to the beginning of the Cambrian Period about 541 million years ago.

    zh前寒武纪

    • The Precambrian period covers about 88% of Earth's geological time.
    • Fossils from the Precambrian period are extremely rare.
    • During the Precambrian period, the first simple life forms appeared.