an excessive and dangerous dose of a drug
(药物)过量;危险的剂量
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she took an overdose the day her husband left .丈夫离开那天她服用了过量药物。
take an overdose of a drug
用药过量
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he was admitted to hospital after overdosing on cocaine .他在过量使用可卡因后被送入医院。
[with obj.]give an overdose to
给…服过量的药。