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sed·a·tive-hyp·not·ic AHD[sĕd'ə-tĭv-hĭp-nŏtʹĭk] D.J.[ˌsedətɪvhɪpˈnɒtɪk]K.K.[ˌsɛdətɪvhɪpˈnɑtɪk]n.（名词）- A drug, such as a barbiturate or antianxiety agent, that depresses the activity of the central nervous system and is used to relieve anxiety and induce sleep.安眠镇静剂：可抑制中枢神经系统活动的药物，如巴比妥剂或抗焦虑剂，并用来缓和焦虑和改善睡眠
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