postal service revenue

例句：

1. 1.The postal service is responsible for delivering mail and packages.
   邮政服务负责运送邮件和包裹。
2. 2.The company's postal service revenue has increased significantly in the past year.
   该公司的邮政服务收入在过去一年内显著增长。
3. 3.The postal service revenue accounts for a significant portion of the government's budget.
   邮政服务收入占政府预算的一大部分。