side effect

名词 side effect:

1. a secondary and usually adverse effect of a drug or therapy
2. any adverse and unwanted secondary effect
   同义词：fallout

1. Medicines sometimes have unpleasant side effects.
   药物有时具有令人不快的副作用。
2. Physical and chemical tests verify that this Recovery Device has neither radioactive pollution nor toxic side effects.
   经理化检验证实：使用该器无放射性污染，对人体绝对无毒无副作用。