efficacy

名词 efficacy:

1. capacity or power to produce a desired effect
   同义词：efficaciousness

1. Aspirin has efficacy in relieving headaches.
   阿司匹林有解除头痛的效能。
2. We are testing the efficacy of a new drug.
   我们正在测试新药的功效。
3. The efficacy of the medicine is satisfactory.
   这药的药效令人满意。

ef.fi.ca.cy

n.（名词）
Power or capacity to produce a desired effect; effectiveness.
效验：产生预期效果的力量或能力；效力

来源：
Latin effic3cia
拉丁语 effic3cia
from effic3x effic3c- [efficacious] * see efficacious
源自 effic3x effic3c- [实验的] *参见 efficacious