| 释义 | marginal cost  noun [countable, uncountable]  (economics 经济学) the amount of extra money that a business must spend in order to increase its level of production or supply by one unit  边际成本◆a business with extra capacity can produce extra units at low marginal cost.  拥有剩余生产能力的企业能够以较低的边际成本增加产量。  ➡  marginal revenue |