exchange current

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 company exchanged its old equipment for new ones.
   公司用新的设备替换了旧的设备。
3. 3.The two countries exchanged ambassadors to strengthen diplomatic relations.
   两国互派大使以加强外交关系。