trade in

• • [美国英语]
  • 做…买卖；做…生意；从事…：

    They trade in furs and skins.

    他们做皮货生意。

    to trade in chemical fertilizer

    经营化肥

  • 以(旧汽车等)折价抵付同类新物的部分价金；用…抵货款：

    She traded in her old refrigerator for a new one.

    她以旧冰箱折价添钱买了一台新冰箱。