单词	边际效用递减
释义	边际效用递减declining marginal utility
随便看	network diameter network diaphragm network dimensioning network director network director--nd network directory network director，nd network disconnect and reset network disconnect command network disk network-- dissipative matching network distribution network distribution equipment network distributor network domain network drill network drive network driver interface specification network driver interface specifications network driver interface specifications，ndis network duality network dynamic data exchange network dynamics network earth reference network economics