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单词 silurian
释义

Silurian

​noun
DEFINITIONS1
  1. 1
    the geological era before the Devonian, from about 439 to 409 million years ago
    The first true fish and land plants appeared during the Silurian.
    Submitted from:
    United Kingdom on 31/10/2019
    Open Dictionary - October2019
Noun☞Silurian
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更新时间：2025/3/18 7:40:12