使用正常剂量的药物进行治疗时出现的非预期有害反应，称作药品不良反应(adr)。

Harmful, unintended reactions to medicines that occur at doses normally used for treatment are called adverse drug reactions (ADRs).

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对药物产生的非预期、有害反应(称作药品不良反应)位居许多国家主要死因之列。

Unintended, harmful reactions to medicines (known as adverse drug reactions) are among the leading causes of death in many countries.

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