久青草国产手机视频免费观看_毛片网站是多少_亚洲视频中文_一区二区高清在线

首頁英語詞典efficacyefficacy英英釋意

efficacy

英 ['ef?k?s?] 美['?f?k?si]
  • n. 功效，效力

英英釋意

1. capacity or power to produce a desired effect;
"concern about the safety and efficacy of the vaccine"