Question

efficacy n.功效;效力;效验;生产率;

Accepted Answer

英[ˈefɪkəsi]  美[ˈɛfɪkəsi] N-UNCOUNT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.例：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。

单词	efficacy
音标	英[ˈefɪkəsi] 美[ˈɛfɪkəsi]
解释	n.功效;效力;效验;生产率;
例句	N-UNCOUNT 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. 例：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。
变形

Efficacy 英[ˈefɪkəsi 美[ˈɛfɪkəsi N.功效;效力;效验;生产率 N Uncount 功效;效力 Talk Talking