英语单词分类 轻松记单词

更新时间:2024-12-16 12:45:04

extragalactic nebula

河外星云
  • 英英释义

Noun:
  • (astronomy) a collection of star systems; any of the billions of systems each having many stars and nebulae and dust;

    "`extragalactic nebula' is a former name for `galaxy'"

  • 近义词

  • 临近词

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