交换的

例句：

1. 1. They exchanged pleasantries with the foreigners.
   他们与外国人进行了友好的交谈。
2. 2. The company exchanges its products for raw materials.
   公司用其产品换取原材料。
3. 3.The two countries exchanged letters and gifts during their diplomatic relations.
   两国在外交关系期间互寄信件和礼物。