汉英词典
Chinese-English Dictionary
MEANING OF 括约肌
括约肌 (括約肌)
sphincter
〈名〉肛门、尿道口、幽门等处的环状肌肉,能收缩和舒张,收缩时使肛门、尿道口、幽门等关闭,舒张时使它们开放。
kuò () yuē/yāo
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