边际效用在假定其他商品的消费量保持不变的条件下消费额外一单位追加商品时所带来的追加的或额外的满足
Marginal utility The additional or additional satisfaction that results from consuming an additional unit of an additional good, assuming that the consumption of other goods remains constant
以上为机器翻译结果，长、整句建议使用 人工翻译 。