短語詞組短語marginal effect utility 邊限效用marginal consumption utility 邊際消費效用marginal l utility 邊際效用marginal incentive utility 邊際激勵效用marginal -utility theory of value 價值的邊際效用論;邊際效用價值論marginal negative utility of labor 邊際勞動負效用law of marginal decreasing utility 邊際效用遞減律Marginal Utility of Money 貨幣的邊際效用 返回 marginal utility