the efficacy of the drug 药物的效力
ensure efficaciousness 确保有效性
perceived efficaciousness 感知的有效性
A: Do you think the new law will solve the problem?
A：你认为新法律能解决这个问题吗？
B: Its efficaciousness depends on how it is implemented.
B：它的有效性取决于如何实施。
1) 有效性
2) 效力
3) 效能
1. 有效性；效力
noun
1. The quality or state of being efficacious; the ability to produce a desired effect.
Synonym: efficacy, effectiveness