1. U 贸易，商业，买卖　 exchange of goods or services for money or other goods
2. C 行业，生意　 business of a particular kind
3. C 谋生手段，手艺，职业　 way of making a living, especially a job that involves making sth; occupation

　advance ～　发展贸易
　build up ～　发展商业
　carry on ～　经商，做生意
　develop ～　发展商业
　do a ～　进行贸易，做生意
　encourage ～　鼓励贸易
　engage in ～　做买卖
　expand ～　扩大贸易
　go into ～　经商
　lose ～　失去生意，失去贸易机会
　open up ～　开发贸易
　promote ～　促进贸易
　restrict ～　限制贸易
　enter a ～　步入某一行业
　follow a ～　从事一种职业
　give up a ～　放弃一种职业
　learn a ～　学一门手艺
　play a ～　从事某一行业
　practice a ～　从事某一行业
　take up a ～　从事一种职业
　fair ～　公平贸易
　foreign ～　对外贸易，国际贸易
　free ～　自由贸易
　international ～　对外贸易，国际贸易
　large ～　大宗生意
　lively ～　生意兴隆
　overseas ～　对外贸易
　border ～　边境贸易
　drug ～　毒品贸易
　export ～　出口贸易
　slave ～　奴隶买卖
　transit ～　过境贸易，转口贸易
　service ～　服务行业
　the news ～　新闻业
　～ agreement　贸易协定
　～ balance　贸易平衡
　～ union　工会
　by ～　以…为职业
　in ～　做小买卖，开铺子
　a trick of the ～　做生意的诀窍
　～ among　…之间的贸易
　～ at village fair　集市贸易
　～ between　…之间的贸易

　This town carries on a brisk trade.　这市镇贸易很昌盛。
　Foreign trade kept the country's economy healthy.　对外贸易使国家的经济健康发展。
　By the end of a year the little seed and grain shop had developed its trade considerably.　到年底，那个种子、粮食小店的生意有了相当大的发展。
　He is in trade.　他经商。
　None are genuine unless bearing the above trademark.　无此商标者均系伪造。
　He got a job as editor of a trade journal.　他找到了一份当商业杂志编辑的工作。
　Wu Yi Mountain City earns most of its income from the tourist trade.　武夷山市的大部分收入来自旅游业。
　Words are the tools of her trade.　言语是她那一行必不可少的工具。
　He is a jack of all trades and master of none.　他样样都懂一点，但都不精通。
　She made a good trade.　她做了一笔好生意。
　Being a printer is a trade; being a lawyer is a profession.　当印刷工是一项需要有手艺的行当，当律师则是一门专业。
　Basket-weaving is a dying trade.　编篮子这一行已逐渐衰弱。
　We offered discounts to the trade.　我们对同行给予优惠。
　They only sell cars to the trade, not to the general public.　他们只向经销商出售汽车，不卖给一般人。
　That store has a lot of trade.　那商店有许多顾客。
　The new shop has been doing a brisk trade in cut-price clothes.　那家新商店做减价服装生意一直很兴隆。
　Outside the scene he was doing a good trade in souvenirs.　在景点外，他经销纪念品的生意不错。

 ♣ trade, business, occupation, profession, vocation
　这组词都有“职业，工作”的意思。它们之间的区别是：business使用广泛，在日常生活中，可泛指“事情”，尤指自己负责管理的事情；在社会经济生活中，多指生意，尤指以赢利为目的的买卖或商业中的工作。occupation可以泛指各种专业。profession指必须受过相当高的教育或专门训练才能从事的知识性职业，如律师、医生、建筑师等。vocation指专心从事的业务，除谋生的行业外，还包括专门爱好。trade则是指涉及体力或手工劳动、手工操作机械或工具的职业。例如：
　That's no business of yours.　那事与你无关。
　Mind your own business.　管你自己的事，少管闲事。
　A lot of the U.S. small grocers have gone out of business since the advent of the supermarkets.　超级市场一出现，大批美国食品杂货店就歇业了。
　She got a sideline occupation.　她从事第二职业。
　She left her teaching profession and became a secretary.　她放弃教书的职业改行当了秘书。
　Mr. Brown is a lawyer by profession.　布朗先生的职业是律师。
　He chose painting as his vocation.　他以绘画为专业。
　He is in the silk trade.　他做丝绸生意。
 ♣ trade, commerce
　参见commerce条。

　vt. & vi.交易；经商 buy and sell things; exchange; barter

　～ books　交换书
　～ places　交换位置
　～ seats　交换座位
　～ stamps　交换邮票
　～ extensively　大量地做生意
　～ away　卖掉，换掉
　～ down　以高价物品交换廉价物品
　～ off　轮流，交替
　～ out　出卖
　～ out principles　出卖原则
　～ up　将手中的东西折价换取更重要的同类东西
　～ at the store　在商店买东西
　～ sth for a hat　用…换一顶帽子
　～ sth for a new bicycle　把…折价换新自行车
　～ sth for a spoon　用…换一把勺子
　～ sth for another thing　以…换取另一物
　～ in bicycles　做自行车生意
　～ in furs　做毛皮生意
　～ in grain　经营粮食
　～ in matches　经营火柴
　～ in iron and steel　经营钢铁
　～ in salt　贩卖盐
　～ in sewing machines　经营缝纫机
　～ with a firm　和公司做生意
　～ with a shopkeeper　和店主做生意
　～ with various countries　与好几个国家做生意

　He traded as a tobacco merchant.　他是做烟草生意的商人。
　To trade is to buy and sell things.　经商就是买卖东西。
　They were persuaded to trade information.　他们被说服出卖情报。
　They traded seats.　他们互换座位。

 ♣ trade at　(v.+prep.)
　在…买东西　buy goods at (usually a particular shop)
　They are trading at a store.　他们正在商店买东西。
　Which store do you usually trade at?　你常在哪个商店买东西?
 ♣ trade for　(v.+prep.)
　用…换　exchange sth by sth
　The boy traded his skates for a cricket bat.　这个男孩子用他的溜冰鞋换了一个板球拍。
　The early settlers traded copper for corn.　早期的殖民者用铜来换玉米。
　I would love to trade this car for a pickup truck.　我愿意用这辆汽车换一辆小型轻便卡车。
　They landed on the island and traded knives for gold dust.　他们登上岛后，用刀子去换金沙。
　Early European visitors to the North of Canada traded manufactured goods for furs and skins.　早期到加拿大北部的欧洲来客用工业品换取毛皮。
　He traded a job in New York City for the life of a cowboy.　他放弃了在纽约的工作，去过牛仔生活。
 ♣ trade in¹　(v.+adv.)
　折价换取　surrender sth in part-exchange when buying sth else
　They trade in their car every three years.　他们每三年就以旧汽车贴换新车。
　I have traded my old radio in for a transistor.　我把那台旧收音机折价换了一台半导体收音机。
　The gas company is offering fifty pounds off a new cooker if you trade in your old one.　如果你用旧炊具来折价的话，那家煤气公司愿减价50镑出售一套新炊具。
 ♣ trade in²　(v.+prep.)
　出售，经营　sell a certain kind of goods; engage in sth
　They traded in fruit and vegetables.　他们经营水果和蔬菜。
 ♣ trade off　(v.+adv.)
　〈非正〉交换物品或人　 exchange one thing or people for another
　The two armies agreed to trade off their prisoners.　两军同意交换俘虏。
　They traded off horses hundreds of miles from home.　他们到离家几百里外的地方用马匹换别的东西。
 ♣ trade on〔upon〕　(v.+prep.)
　（不公正地）利用　take (unfair) advantage of sth
　The senator's son traded on his father's name when he ran for mayor.　参议员的儿子在竞选市长时利用他父亲的名气。
　They traded on his credulity.　他们利用了他的轻信。
　I'm tired of the way in which he trades on your generosity and I think it is time you put an end to it.　我讨厌他那样利用你的慷慨大方来获取好处，我认为你不应当让他这样干。
 ♣ trade with　(v.+prep.)
　与…进行贸易〔交换〕　have dealings with sb; change with sb
　We don't trade with that company.　我们和那家公司没有贸易往来。
　We trade with many countries in industrial and agricultural products.　我们与许多国家在工农业产品方面进行贸易。
　China now trades with more than 130 countries.　中国现在和130多个国家进行贸易。
　He wanted to change his days off and got a fellow worker to trade with him.　他想换休，找一位同事和他对调。
　Rosa traded seats with Cage.　罗莎和凯奇对换了座位。

　［同义词］ n. business, commerce, dealing, traffic, craft, learning, livelihood, occupation, profession v. barter, exchange, swap
　［词源］　中古低地德语trade，古英语<古瑞典语trad