1 [C,U] giving or receiving sth in return for sth else 交换: a useful exchange of information 很有意义的情况交流 We can offer free accommodation in exchange for some help in the house. 我们可提供免费住宿，条件是要帮忙做点家务。

2 [U] the relation in value between kinds of money used in different countries 兑换；兑换率: What's the exchange rate / rate of exchangefor dollars? 美元的兑换率是多少？ Most of the country's foreign exchange comes from oil. 这个国家的外汇收入主要来自石油。 ☞Look at Stock Exchange. 参看 Stock Exchange。

3 [C] a visit by a group of students or teachers to another country and a return visit by a similar group from that country （两国学生或教师之间的）互访，交流: She went on an exchange to Germany when she was sixteen. 她十六岁的时候到德国去参加过一次互访活动。

4 [C] an angry conversation or argument 争吵；争辩: She ended up having a heated exchange with her neighbours about the noise the night before. 为了前一天夜里的噪音问题，她最后跟邻居吵得很凶。