疗效的英文：
healing efficacy
healing effect

参考例句：

The medicine was an effective purge.
这是疗效很好的泻药。

wonder drug=miracle drug)
疗效神奇的药,灵药(尤指抗生素)

fish mousse
鱼海绵冻(一种疗效食品)

Treating headache with essential balm has a marvelously quick result at a low price.
万金油治疗头痛，不仅疗效神速，而且价格便宜。

A doubtful remedy
疗效可疑的疗法

Saturation does not increase efficacy.
饱和剂并不增加疗效。

Yield marvelously quick results
收效神速;疗效神速

our confidence in the curative properties of the bottle of medicine,
我们对瓶装药品疗效的信心,

This oil is very good for regulating digestive disorders.
这种油对消化不良很有疗效。

The patient began to answer to medical treatment.
病人身上开始显现出疗效。

efficacy是什么意思：
n. 功效，效力

feeling of efficacy
效力感

The efficacy of the medicine is satisfactory.
这药的药效令人满意。

Saturation does not increase efficacy.
饱和剂并不增加疗效。

effect是什么意思：
n. 效果；作用；影响；印象；所有物
v. 使产生；使发生；引起

This parameter has no effect.
此参数不起作用。

The drug was of no effect.
这药无效。

The helpful effect on propellant slosh effects was a secondary consideration
推进剂晃动的有利性影响是一个次要的考虑因素。