英 [ˈtreɪd ɪn] 美 [ˈtreɪd ɪn]
以旧换新：作为购买或账单的支付或部分支付而交换旧物品。
交换：用一种物品或服务换取另一种物品或服务。
以旧换新
... too much for sb使某人承受不了 trade in以旧换新 treat sb请客，招待某人 ...
... Trade in：以旧折价换新 Inefficient：效率低的 Bane：造成困扰（或不快的）事物 ...
买卖(trade in), 此释义来源于网络辞典。
... the restaurant is breaking even 不赔不赚 (听的能力中多为答案) trade in 旧货换新折价 in the middle of 在..之中 忙于…之中 ...
The governor aired some ideas about pepping up trade in the region.
政府宣传在该地区促进贸易的一些想法。
They were, after all, responsible for about $13 trillion of trade in 2005, and the WTO underpins this success.
毕竟他们在2005年做成了13万亿的国际贸易，而世贸组织是这个成就的基石。
They do a lively trade in souvenirs and gifts.
他们做纪念品和礼品生意，做得有声有色。
The researchers say the United States represents more than fifty percent of the trade in coral and reef fish.
VOA : special.2010.08.10
He urged revival of the slave-trade in the late 1850s, and he developed a theory of what he called warranteeism--w-a-r-r-a-n-t-e-e-I-s-m.
他促成了十八世纪五十年代后期,奴隶交易的复苏,还自己发明了一套理论,名为抵押品主义
美国内战与重建课程节选 : 耶鲁公开课
You'd have to be an authorized participant, but if you become an institution you can get authorized to trade in the auction.
只有授权参与商才可以参加,如果你是一个商业机构,你可以获得授权参与交易
金融市场课程节选 : 耶鲁公开课
Experts say demand in Asia especially Vietnam and China currently drives most trade in rhino horns from southern Africa.
VOA : special.2009.12.14
But a government program that paid Americans to trade in old vehicles for new, fuel-saving models increased car sales in the summer.
VOA : special.2010.01.01
It does a brisk trade in cappuccinos and cafe lattes, and is perfect for a mid-morning pick-me up.
Yet the cheap system processed a trade in 50 milliseconds, one-fourth the time needed by the Sun system.
Most foreign pharmaceutical companies appear keener to acquire Indian companies, or they trade in imported medicines.