名词
中文翻译：肛门瓣
同义词：
['anal sphincter', 'anal ring']
例句：
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1.The doctor advised him to have surgery onhis anal valve.
医生建议他做肛门瓣手术。
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2. He was diagnosed with acondition that affects the anal valve.
他被诊断出患有影响肛门瓣的状况。
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3. Duringchildbirth, the anal valve isstretched and can become inflamed.
分娩过程中，肛门瓣会被拉伸并可能发炎。