gill pouch
柯林斯詞典
1. N any of a series of paired linear pouches in chordate embryos, arising as outgrowths of the wall of the pharynx. In fish and some amphibians they become the gill slits 鰓囊
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1. N any of a series of paired linear pouches in chordate embryos, arising as outgrowths of the wall of the pharynx. In fish and some amphibians they become the gill slits 鰓囊