求翻译：Since the demand curve represents the maximum price the marginal buyer is willing to pay for a good, it must also represent the maximum benefit the buyer expects to receive from consuming the good. Consumer surplus must take into account the amount the buyer actually pays for the good, with consumer surplus measured as the difference between what the buyer is willing to pay and what he/she actually paid. Consumer surplus, then, measures the benefit the buyer didn’t have to “pay for.”是什么意思？

待解决 悬赏分：1 - 离问题结束还有