n (1) 1)买卖，交(贸)易(buying and selling of goods for profit)[U]：free/domestic/foreign～自由贸易/国内贸易/外贸;a～deficit/center/agreement 贸易赤字/中心/协议;make a～agreement 制订贸易协定;have much/do a lot of～with foreign countries和外国有/做许多买卖;people in～生意人;～gap/mark/name/price 贸易差额/注册商标/商品名称/批发价格;〖同〗commerce，business，merchandising; 2)(商业)行业(field of business activity)[C][N(in)]：do a brisk～in cut-price books 做削价书的生意很兴隆;a～secret/journal 行业秘密/期刊;be (work) in the cotton/book/furniture/tourist～做棉花/图书/家具/旅游的生意;～wind 信风;～union 工会;～unionism 工会制度/工会主义;～unionist 工会成员;T～s Union Congress(英国)工会联合会;全国总工会;

(2) 1)谋生之道，手艺，职业(occupation，esp one requiring skilled labor;craft)[U，C]：be a dentist/a carpenter/an electrician/a butcher/a tailor/a printer by～从事牙医/木匠/电工/屠夫/裁缝/印刷的职业;several different/useful～s 几种不同的职业/有用的职业;the building and construction～s 建筑业;courses in a variety of～s 传授各种手艺的课程;〖同〗 business，occupation，profession; 2)同行业的人;同业(persons working in or associated with a specified business or industry)[Gp，the～]：sell cars/offer discounts to the～向同业出售汽车/给同业打折扣;(lecture/book) be of interest only to the～(讲座/书)只有同行感兴趣;The new tax on clothes is not liked by the～. 新的服装税不受该行业人士的欢迎。

(3)交换(exchanging)[C]：make a～of a book for a kite/of skates for a watch 拿书换风筝/冰鞋换手表;

→′tradesman n 送货员;店主;

v (1)进行交易，做生意(买卖)(engage in buying and selling)[I，I+prep (in) (with)]：a～ing partner/post 贸易伙伴/站;refuse to～in arms with a country/textiles with a company 拒绝与某国家做武器交易/与公司做纺织品交易;～in vegetables/fruit/grain/postage stamps 经营蔬菜/水果/谷物/邮票;～with all the European nations和所有的欧洲国家做生意;

(2)买东西，购货，(经常)光顾 (shop as regular customers)[I+prep(at)](AmE)：the store sb～s at 某人常去的商店;～at Mr. Green's vegetable store/the local store 经常在格林先生的蔬菜店买菜/当地商店买东西;〖同〗shop，buy，deal;

(3)交换(do a trade in sth(exchanging it for sth))[T+n+prep(for)，D+n+n]：～one's book for a kite/one's skates for sb's watch 用自己的书换一个风筝/冰鞋换某人的手表;I'll～you my stamps for your scout knife. 我愿用邮票换你的匕首。

trade in (v adv)折价购物(vt)：We decided to～in our old car for a new one. 我们决定把旧车折价，买一辆新车。

trade off (v adv)放弃……作为一种妥协(vt)：The two armies agreed to～off their prisoners. 两军彼此妥协同意交换战俘。

trade on (v prep)利用，滥用，占便宜(vt)(尤derog)：～on sb's sympathy/sb's kindness/sb's reputation利用某人的同情/好意/名誉;

→′trader n 贸易商;′trading n 做生意，买卖;′trade-in n 折价物;′trade-off n 折中;′trading estate 计划工业区;′trading stamp 赠券;

【辨异】trade 与commerce和traffic区别见COMMERCE。