a substance that has no physical effects, given to patients who do not need medicine but think that they do, or used when testing new drugs安慰剂，安慰药（给无实际治疗需要者或测试新药时使用）- the placebo effect (= the effect of taking a placebo and feeling better)安慰剂效应
- Half of the people taking part in the experiment were given a placebo.参与药物试验者有半数所服用的是无效对照剂。
- The placebo effect means that any treatment will improve patients merely because they want to recover.安慰剂作用意味着任何治疗都只会因为患者想要康复而使他们得到改善。
Topics Social issuesc1Oxford Collocations DictionaryPlacebo is used before these nouns: See full entry Word Originlate 18th cent.: from Latin, literally ‘I shall be acceptable or pleasing’, from placere ‘to please’.