词典释义：
[mass noun]the action of buying and selling goods and services
贸易，交易，生意
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a move to ban all trade in ivory 全面禁止象牙贸易的行动
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a significant increase in foreign trade 外贸方面显著的增长
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the meat trade .肉类贸易。
〈旧，主贬〉 经商
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the aristocratic classes were contemptuous of those in trade .贵族阶级鄙视商人。
[count noun]
〈北美〉 （体育界）转会，交换，交换运动员
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players can demand a trade after five years of service .服务五年之后，球员可以提出转会。
a skilled job, typically one requiring manual skills and special training
（尤指需要手工技巧，受专门训练的）职业，行业，手艺
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the fundamentals of the construction trade 建筑行业的基本原则
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[mass noun]
a carpenter by trade .一个职业木匠。
(
同行业者，同业，同仁
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in the trade this sort of computer is called ‘a client-based system’ .这种计算机被业内人士称为“客户机系统”。
(
〈英〉 执照酒商。
(一般作
信风，贸易风
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the north-east trades .东北信风。
buy and sell goods and services
买卖货物，做生意，从事服务贸易
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middlemen trading in luxury goods .从事奢侈品贸易的中间商。
[with obj.]buy or sell (a particular item or product )
买；卖（某物，产品）
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she has traded millions of dollars' worth of metals .她经手了数百万美元的金属贸易。
(especially of shares or currency)be bought and sold at a specified price
（尤指股票、货币）被买卖，被交易
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the dollar was trading where it was in January .美元交易价格与一月份持平。
[with obj.]exchange (something) for something else, typically as a commercial transaction
以物易物，对换，交换（尤指商业交易）
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they trade mud-shark livers for fish oil 他们用灰六鳃鲨肝换鱼油
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the hostages were traded for arms .人质被用来换取武器。
[with obj.]
〈喻〉 相互交换（尤指相互辱骂、对打）
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they traded a few punches .他们挥拳对打。
[with obj.]
〈北 美〉 将（运动员）转会（或转队）。
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trade places US change places 〈美〉 更换地方
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trade down （或up ） sell something in order to buy something similar but less （or more） expensive 为购买价格更低（或更高）的类似物而出售 -
trade something in exchange a used article in part payment for another 以旧物折价贴换同类新物she traded in her Ford for a Land Rover . 她把旧福特车折价添钱买了一辆“陆虎”越野车 -
trade something off exchange something of value, especially as part of a compromise （尤指作为让步而）交换某物the government traded off economic advantages for political gains . 政府以牺牲经济利益来换取政治好处 -
trade on take advantage of （something）， especially in an unfair way （尤指以不公平手段）利用the government is trading on fears of inflation . 政府利用了对通货膨胀的恐惧心理
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international trade 国际贸易
真题例句：
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do trade with sb 与...交易
真题例句：
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trade war 贸易战
真题例句：
"late Middle English （as a noun）： from Middle Low German, literally ‘track'， of West Germanic origin; related to
