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新东方-柯林斯雅思备考词典
trade-in
[NOUN]
trade-ins
1. [C 可数名词] （将旧车）折价换新
A trade-in is an arrangement in which someone buys a new car at a reduced price by giving their old one, as well as money, in payment.
双语例句
例：the trade-in value of the car.
这辆汽车的以旧换新价。