名词
中文翻译：麻醉剂
同义词：
['anesthesia', 'narcotic', 'hypnotic']
例句：
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1.The anaesthetic was administered by a doctor.
麻醉剂由医生注射。
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2.He was under anaesthesia when the surgery was performed.
手术进行时，他处于麻醉状态。
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3. Anaesthetics are used to relieve pain and discomfort during surgery.
麻醉药用于手术期间减轻疼痛和不适。