Efficacy
01
效力
the power to bring about planned or wanted results
语法信息
有生性状态
抽象
形态构成
复合词
不可数
例子
Questions remain about the true efficacy of the advertising campaign due to the lack of metrics collected.
由于缺乏收集的指标，关于广告活动的真正功效仍然存在问题。
词汇树
efficacious
efficiency
inefficacy
efficacy
