trade in
英 [ˈtreɪd ɪn]
美 [ˈtreɪd ɪn]
以（旧物）折价贴换同类新物
柯林斯词典
- See also:He had a Rolls-Royce, and he traded it in for two matching silver Range Rovers...Richard refused to trade in his old Canon cameras.trade-in
英英释义
verb
- turn in as payment or part payment for a purchase
- trade in an old car for a new one