动词
中文翻译：凿孔
同义词：
['trephine', 'trephine surgery']
例句：
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1.The surgeon performed a trepanning operation on the patient's skull.
外科医生对患者的颅骨进行了开颅手术。
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2. Trepanning is a painful procedure that requires anesthesia.
开颅手术是一种痛苦的程序，需要麻醉。
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3.Trepanning is often used in emergency situations to relieve pressure on the brain.
在紧急情况下，开颅手术常用于减轻大脑的压力。