The rate at which a consumer is willing to trade one good for another
Marginal revenue 边际收益
The change in total revenue from an additional unit sold
Marginal tax rate 边际税率
The extra taxes paid on an additional dollar of income
Market 市场
A group of buyers and sellers of a particular good or service
Market economy 市场经济
An economy that allocates resources through the decentralized decisions of many firms and households as they interact in markets for goods and services