sphincter
美 [ˈsfɪŋktər]英 [ˈsfɪŋktə(r)]
- n.括约肌
- 网络肛门括约肌;括约筋;扩约肌
复数:sphincters

sphincter
1.括约肌a ring of muscle that surrounds an opening in the body and can contract to close it
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