名词
中文翻译：Unknown
同义词：
['hypnotic', 'narcotic analgesic']
例句：
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1.The doctor prescribed a sedative to help him sleep.
医生开了镇静剂让他入睡。
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2. Narcotics are illegal in many countries due to their addictive properties.
由于其成瘾性，麻醉药在许多国家是非法的。
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3. Narcotic drugs can be highly addictive and cause severe withdrawal symptoms.
麻醉药极易上瘾，并会导致严重的戒断症状。