air sacs

 
  • 肺泡
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air sacs的英文翻译是什么意思,词典释义与在线翻译:

英英释义

名词 air sac:
  1. a tiny sac for holding air in the lungs; formed by the terminal dilation of tiny air passageways

  2. any of the thin-walled extensions of the tracheae of insects

  3. any of the membranous air-filled extensions of the lungs of birds

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