效用的英文：
usefulness
effectiveness

A missionary for acupuncture and moxibustion
针灸效用的鼓吹者

Certain plants have medicinal ( ie healing ) properties
某些植物具有药物效用

Act utilitarianism holds that we must study each action in all of its specific details to determine its utility.
行为效用主义认为,必须研究每个行为的每一个特定细节以决定它的效用大小。

The total time spent performing all the specific operations that follow.
执行下面的特殊作业总计时间会失去效用。

On the supply side, individuals are assumed to operate on the principle of utility maximization.
从供给方面来看，假定个人行为是遵循效用最大化原则。

On the supply side, individuals are assumed to operate on the principle of utility maximization
从供给方面来看，假定个人行为是遵循效用最大化原则。

It is likely to have a soothing effect on him.
这样很可能对他产生一种镇定的效用。

It would not have occurred to her that an action which is ineffectual thereby becomes meaningless.
她从来没有想到过，没有效用的事就没有意义。

It is proved By medical science that codliver oil has the efficiency of calming the mind and promoting mentality.
医学证明，鱼肝油有宁神益智效用。

Both an ascetic monk and a high-living playboy may assign 1000 units to a steak and 100 units to a potato
一个苦行僧和一个花花公子对牛排的偏好可能都是1000效用单位，对土豆的偏好都是100效用单位。

It is used as a reflexive.
它被作为反身代词使用。

That was a balk to us.
那对我们是个挫折。

They help us to be maximal encouraging to us.
他们来帮助我们对我们是个极大的鼓舞。

Already used and therefore unavailable for further use.Used of taxonomic names.
已占用的已经使用因而不能再作他用的。用于分类学名称

Why use wood when you can use plastic?
既然能用塑料，何必非用木料？

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。

She only dresses like that for the effect it creates/for effect.
她仅仅为了装样子才那样打扮.

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