记忆方法
双解例句
小知识
The degree to which a method or medicine brings about a specific result is its efficacy. You might not like to eat it, but you can't question the efficacy of broccoli as a health benefit.
Efficacy is a more formal way to say effectiveness, both of which stem from the Latin verb efficere “to work out, accomplish.” The effectiveness, or efficacy, of something is how well it works or brings the results you hoped for. A scientist does research to determine the efficacy of a vaccine or medicine under development. If it is efficacious, it will cure or prevent a disease.
实用短语
单词用法
词根词缀
词根: fic
1. =face,表示”脸,面”; 2. =do,make 表示”做,制作”
adj.
superficial 肤浅的super在……上面+fic做+ial……的→在表面上做
efficacious 有效的, 灵验的efficacy[[n.功效,效能,效力]]男→adj.有效的, 灵验的
fictitious 假的,虚构的fict=fic做,制作+itious……的→做出来的
n.
efficacy 功效,效能,效力ef出+fic做,制作+acy状态,结果→做出来的结果→功效
fiction 虚构,编造;小说fict=fic做,制作+ion表名词→做出的故事
profit 利润,收益pro很多+fit=fic做→做很多,做得好→利润
同义词
proficiency / competence / capacity / ability
capacity / technique / ability / competence / proficiency / utility / virtue