名词
中文翻译：小囊
同义词：
['sac', 'saccule', 'duct', 'ductus例句：1. The doctor removed the diverticulum to relieve the pain.（医生移除了小囊以缓解疼痛。）']
例句：
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1. The doctor removed the diverticulum to relieve the pain.
医生移除了小囊以缓解疼痛。
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2. The diverticulum was filled with fluid and could not be drained.
小囊被液体充满，无法排空。
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3. The surgeon performed a diverticulectomy to remove the enlarged sac.
外科医生进行了一次小囊切除术，以切除肿大的小囊。