效用的英文：
usefulness
effectiveness
參考例句：
A missionary for acupuncture and moxibustion
鍼灸效用的鼓吹者Certain plants have medicinal ( ie healing ) properties
某些植物具有藥物效用Act utilitarianism holds that we must study each action in all of its specific details to determine its utility.
行為效用主義認為,必須研究每個行為的每一個特定細節以決定它的效用大小。The total time spent performing all the specific operations that follow.
執行下面的特殊作業總計時間會失去效用。 On the supply side, individuals are assumed to operate on the principle of utility maximization.
從供給方面來看，假定個人行為是遵循效用最大化原則。 On the supply side, individuals are assumed to operate on the principle of utility maximization
從供給方面來看，假定個人行為是遵循效用最大化原則。It is likely to have a soothing effect on him.
這樣很可能對他產生一種鎮定的效用。 It would not have occurred to her that an action which is ineffectual thereby becomes meaningless.
她從來沒有想到過，沒有效用的事就沒有意義。It is proved By medical science that codliver oil has the efficiency of calming the mind and promoting mentality.
醫學證明，魚肝油有寧神益智效用。Both an ascetic monk and a high-living playboy may assign 1000 units to a steak and 100 units to a potato
一個苦行僧和一個花花公子對牛排的偏好可能都是1000效用單位，對土豆的偏好都是100效用單位。usefulness是什麼意思：
n. 有用
It is used as a reflexive.
它被作為反身代詞使用。That was a balk to us.
那對我們是個挫折。They help us to be maximal encouraging to us.
他們來幫助我們對我們是個極大的.鼓舞。Already used and therefore unavailable for further of taxonomic names.
已佔用的已經使用因而不能再作他用的。用於分類學名稱Why use wood when you can use plastic?
既然能用塑料，何必非用木料？effectiveness是什麼意思：
n. 有效，效力
This parameter has no effect.
此引數不起作用。The drug was of no effect.
這藥無效。The helpful effect on propellant slosh effects was a secondary consideration
推進劑晃動的有利性影響是一個次要的考慮因素。She only dresses like that for the effect it creates/for effect.
她僅僅為了裝樣子才那樣打扮 medicine was an effective purge.
這是療效很好的瀉藥。
