名词
中文翻译：麻醉药
同义词：
['anesthetize', 'anesthetise', 'inhalation anesthesia', 'intravenous anesthesia']
例句：
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1. Thepatient was given a local anestheticbefore the surgery.
手术前患者接受了局部麻醉。
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2. During the operation, the patient wasunder general anesthesia.
手术期间，患者处于全身麻醉状态。
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3. Anesthetics are used to relieve pain andprevent infection during surgery.
麻醉药用于手术中减轻疼痛和预防感染。