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单词 nebula
释义 nebula
n. (pl. nebulae or nebulas)
  1. Astron. a a cloud of gas and dust, sometimes glowing and sometimes appearing as a dark silhouette against other glowing matter. b a bright area caused by a galaxy, or a large cloud of distant stars.
  2. Med. a clouded spot on the cornea causing defective vision.
Etymology: L, = mist
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更新时间:2025/1/11 7:08:44