1 [U] the buying or selling of goods or services between people or countries 贸易；交易；买卖: an international trade agreement 国际贸易协议Trade is not very good (= not many goods are sold) at this time of year. 每年这个时候生意都不太好。

2 [C] a particular type of business 行业: the tourist/building/retail trade 旅游╱建筑╱零售业

3 [C,U] a job for which you need special skill, especially with your hands （需要特别技能的）职业（尤指手艺）: Jeff is a plumber by trade. 杰夫的职业是管子工。to learn a trade 学一门手艺 ☞Look at the note at work. 参看work的注释。