名词
中文翻译：麻醉剂
同义词：
['narcotic', 'analgesic']
例句：
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1.The opiates are used to treat pain and reduce inflammation.
这些麻醉剂用于治疗疼痛和减轻炎症。
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2. The doctor prescribed me a narcotic to help me sleep.
医生给我开了一种麻醉药来帮助我入睡。
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3. Narcotics are illegal in many countries due to their addictive properties.
由于成瘾性，麻醉药在许多国家是非法的。