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N-COUNT A sphincter is a ring of muscle that surrounds an opening to the body and that can tighten to close this opening. 括约肌 [技术]
...the anal sphincter.
...肛门括约肌。
Dolphins lack vocal cords, nevertheless creating sounds: a complicated system of whistles, squeaks, moans, trills, and clicks are produced by sphincter muscles inside the blowhole.
海豚没有声带,但却能发声:一个由口哨声、吱吱声、呻吟声、颤音和咔嚓声组成的复杂系统是由喷水孔内的括约肌产生的。
Assess ability to control external sphincter.
评估病人外括约机控制情况。
Objective To study the usual complications and preventive measures after applying double stapling device in the sphincter preserving surgery.
目的探讨双吻合器在低位直肠癌前切除术中常见并发症及预防措施。
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