cost of common services

例句：

1. 1. The cost of providing public services is a major concern for the government.
   提供公共服务的成本是政府的一个主要关注点。
2. 2. The cost of maintaining public transportation is a significant expense for cities.
   维护公共交通的费用是城市的一个重大开支。
3. 3. The cost of building a new hospital is estimated to be around $50 million.
   建造新医院的费用估计在5000万美元左右。