- mass noun the action of buying and selling goods and services贸易, 交易, 生意：
a move to ban all trade in ivory
全面禁止象牙贸易的行动
a significant increase in foreign trade
外贸方面显著的增长
the meat trade.
肉类贸易。
- dated, chiefly derogatory the practice of making one's living in business, as opposed to in a profession or from unearned income〈旧, 主贬〉经商：
the aristocratic classes were contemptuous of those in trade.
贵族阶级鄙视商人。
- count noun N. Amer. (in sport) a transfer; an exchange〈北美〉（体育界）转会, 交换, 交换运动员：
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：
the fundamentals of the construction trade
建筑行业的基本原则
mass noun a carpenter by trade.一个职业木匠。
the trade
treated as sing. or pl. the people engaged in a particular area of business同行业者, 同业, 同仁：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”。
the trade
treated as sing. or pl. Brit. people licensed to sell alcoholic drink〈英〉执照酒商。
- （一般作trades）a trade wind信风, 贸易风：
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：
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）：
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：
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）：
they trade mud-shark livers for fish oil
他们用灰六鳃鲨肝换鱼油
the hostages were traded for arms.
人质被用来换取武器。
- with obj. figurative give and receive (typically insults or blows)〈喻〉相互交换（尤指相互辱骂、对打）：
they traded a few punches.
他们挥拳对打。
- with obj. N. Amer. transfer (a player) to another club or team〈北美〉将（运动员）转会（或转队）。
trade places
- US change places〈美〉更换地方。
tradable
（或tradeable）adjectivetrade 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。