对换

例句：

1. 1.They exchanged their ideas with each other.
   他们互相交换了意见。
2. 2. The company exchanged its shares for new ones.
   公司用新的股票交换旧的股票。
3. 3. We exchanged pleasantries before we started our work.
   在我们开始工作之前，我们进行了友好的寒暄。