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单词 sphincter
释义  Related topics: Humansphinc·ter /ˈsfɪŋktə $ -ər/ noun [countable] medical  HBHa muscle that surrounds an opening in your body, and can become tight in order to close the opening 括约肌Examples from the Corpussphincter• the anal sphincter• The sphincters become leaky, and the urine overflows.• Thus it should not be assumed that older patients with ulcerative colitis have weaker sphincters than younger patients.Origin sphincter (1500-1600) Late Latin Greek, from sphingein “to tie tightly”sphinc·ter nounChineseSyllable  muscle body, that in Corpus and an opening surrounds your a
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更新时间：2026/7/3 9:14:45