点击下方单词,选择对的这个单词
1. 以(旧物)折价贴换同类新物If you trade in an old car or appliance, you give it to the person you are buying a new one from so that you pay less.
1. turn in as payment or part payment for a purchase
e.g. trade in an old car for a new one
Synonym: trade
多通过句子记忆单词,而不是单独死记硬背。