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。
Both an ascetic monk and a high-living playboy may assign 1000 units to a steak and 100 units to a potato.
推导出这样结论的另一种方法是：效用是没有单位的，但至少我们可以在脑子衡量我们的愉悦程度。
Another way to put this is that there are no natural units for utility, at least until such time as we are able to measure pleasure in the brain.
它是（商品）量的每单位变动带来的总效用变动率，而不是边际单位的效用。
It is the rate of change in total utility per unit change in quantity and is not the utility of a marginal unit.
我们发现单位价格采购机制在最优拍卖和标准拍卖下都会给垄断者带来更大的期望效用。
We find that unit price mechanisms bring no less expected profit to the monopoly in both optimal mechanisms and in standard auctions.
经济学中有个概念叫“边际效应”，是指消费者在逐次增加1个单位消费品的时候，带来的单位效用是逐渐递减的。
There is a concept to cry in economics "limit effect", be when showing consumer increases an unit consumable in successive, brought unit effectiveness decreases successively gradually.
理性支出原则：产品间的支出分配最终应当能使每种产品上的单位支出产生相同的边际效用。
The Rational Spending Rule: Spending should be allocated across goods that the marginal utility per dollar is the same for each good.
理性支出原则：产品间的支出分配最终应当能使每种产品上的单位支出产生相同的边际效用。
The Rational Spending Rule: Spending should be allocated across goods that the marginal utility per dollar is the same for each good.
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