new
air sacs的英文翻譯是什麼意思,詞典釋義與在線翻譯:
英英釋義
名詞 air sac:
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a tiny sac for holding air in the lungs; formed by the terminal dilation of tiny air passageways
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any of the thin-walled extensions of the tracheae of insects
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any of the membranous air-filled extensions of the lungs of birds
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