名词
中文翻译：二叶结肠
同义词：
['sigmoid', 'colon例句：1. The patient had a sigmoid colon that was causing significant pain.（病人有一个二叶结肠，导致严重的疼痛。）2. The surgeon performed a sigmoid colon resection to remove the tumor.（外科医生进行了二叶结肠切除术以切除肿瘤。）']
例句：
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1. The patient had a sigmoid colon that was causing significant pain.
病人有一个二叶结肠，导致严重的疼痛。
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2. The surgeon performed a sigmoid colon resection to remove the tumor.
外科医生进行了二叶结肠切除术以切除肿瘤。
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3. The patient's sigmoid colon was dilated and filled with fluid.
患者的二叶结肠扩张并充满液体。