名词
中文翻译：麻醉剂
同义词：
['anesthetic', 'aneupneic', 'narcotic']
例句：
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1.The doctor administered a local anesthetic to numb the area before surgery.
医生在手术前给病人注射了局部麻醉药以使区域麻木。
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2. Allethrin is a potent synthetic drug that can cause addiction and withdrawal symptoms.
阿莱瑟林是一种强效的合成药物，可能导致成瘾和戒断症状。
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3. In addition to its medical use, allethrin is also used as a recreational drug in some countries.
除了其医疗用途外，在一些国家，阿莱瑟林还被用作娱乐性毒品。