marginal utility of money

例句：

1. 1. The marginal utility of money isa subject of much debate among economists.
   金钱的边际效用是经济学家们争论的一个主题。
2. 2. The marginal utility of money varies dependingon the individual's income level.
   金钱的边际效用取决于个人的收人水平。
3. 3. Themarginal utility of money can be used todetermine the optimal allocation of resources.
   金钱的边际效用可以用来决定资源的最优分配。