名词
中文翻译：Unknown
同义词：
['inner rectum', 'inner canal', 'internal cavity']
例句：
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1. Theendoproct is a small tube that connects the large intestine to the bladder.
内括约肌是连接大肠和膀胱的小管道。
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2.The endoproct is responsible for storing and releasing waste from the body.
内括约肌负责储存和释放体内的废物。
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3.During surgery, the endoproct is removed to prevent infection.
手术期间，会移除内括约肌以防止感染。