air sacs是什么意思_air sacs的用法_翻译_读音

- 肺泡
英英释义
名词 air sac:

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

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

any of the membranous air-filled extensions of the lungs of birds
临近单词

Airell air air attack weapon air-air missile air pressure load Air escape branch air heating units air return system air-age tactics air cleaning load Airblast atomizer air lift agitator

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