名词
中文翻译：外耳道
同义词：
['outer ear canal', 'external ear canal']
例句：
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1.The doctor examined the patient's external auditory canal and found no signs of infection.
医生检查了患者的外耳道，没有发现感染的迹象。
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2. The patient was advised to keep the external auditory canal clean and dry.
患者被建议保持外耳道清洁和干燥。
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3.During an operation, the surgeon removed a foreign object from the patient's external auditory canal.
在手术过程中，外科医生从患者的外耳道中取出了一个异物。