被交换者

例句：

1. 1. They exchanged their stories for a cup of coffee.
   他们用一杯咖啡换了彼此的故事。
2. 2. The two countries are known for their rich cultural exchanges.
   这两个国家以其丰富的文化交流而闻名。
3. 3. The scientists exchanged ideas and findings during the conference.
   科学家们在会议上交换了想法和发现。