边际效益就是你每得到一件物品给你带来的新增加效益,随着你拥有该物品的增多,你得边际效益便递减,比如当你很饥饿时,你想吃面包,第一个面包的边际效益肯定比第二个大,第二个肯定比第三个大。
投资边际效率 marginal efficiency of investment
资本边际效率递减规律 law of diminishing marginal efficiency of capital
资本的边际效率 marginal efficiency of capital
资本边际效率曲线 marginal efficiency curve of capital ; marginal efficiency of capital curve
边际有效税率 METR ; EMTR
有效边际税率 EMTR
边际资本效率论 marginal efficiency of capital approach
如果效率的概念甚至对个人都一钱不值，当经济学家用加总全社会的方法来使用这个概念时，就太不着边际了。
If the concept of efficiency is worthless even for each individual, it is a fortiori in far worse straits when the economist employs it in an additive way for all of society.
实际上，对从富人那里增收更多钱的第三个论据就是这提议并不是通过提高边际税率而执行的，而是通过制定更有效率的免税代码。
Indeed, the third argument for raising more money from the rich isthat it can be done not by increasing marginal tax rates, but by making the taxcode more efficient.
诚然，第三个关于提高对富人的税收的提议不是通过增加边际税率而实现的，而是通过提高效率的税收也同样能办到。
Indeed, the third argument for raising more money from the rich is that it can be done not by increasing marginal tax rates, but by making the tax code more efficient.
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