英语词汇“air sac”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-新都网

单词	air sac
释义	air sac n. 1. An air-filled space in the body of a bird that forms a connection between the lungs and bone cavities and aids in breathing and temperature regulation. 2. See alveolus. 3. A saclike, thin-walled enlargement in the trachea of an insect. 4. An inflatable pouch attached to the larynx in certain mammals, including the nonhuman great apes.
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