中间程序

例句：

1. 1.The middleman negotiated a fair price for both parties.
   中间人为双方协商出了一个公平的价格。
2. 2. The middleman made the deal possible by arranging the meeting.
   中间人通过安排会议促成了这笔交易。
3. 3.The middleman was responsible for ensuring the smooth operation of the business.
   中间人负责确保业务的顺利进行。