短語詞組短語diminishing of marginal returns 收益遞減principle of diminishing marginal returns 邊際收益遞減的原則;減少的邊際效益原則give rapidly diminishing marginal returns 生迅速縮小的臨界返回Law of diminishing marginal returns 邊際收益遞減律;邊際報(bào)酬遞減規(guī)律;遞減法則 返回 diminishing marginal return