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TOEFL BNC: 9115 COCA: 6281
efficacy
efɪkəsi ˌɛfɪˈkeɪʃəsnəs ˈɛfɪkəsi
N-UNCOUNT [usually with poss] 功效;效力 If you talk about the efficacy of something, you are talking about its effectiveness and its ability to do what it is supposed to. 功效;效力 [formal]
  • Recent medical studies confirm the efficacy of a healthier lifestyle.

    最新医学研究证实了较为健康的生活方式的好处。

SYN effectiveness, efficiency, power, value
Trends of efficacy
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