In some states, revenues from the gasoline tax are used to build and maintainroads.
在一些州,汽油税的收入被用来修建和维护道路。
2
The emerging system through which private companies maintain toll roads in some states is a classic BOT model.
私营公司在一些州维护收费公路的新兴系统是典型的 BOT 模式。
3
He also notes that the forest service is already struggling to maintain a crumbling network of 386,000 miles of road. Better it fix those roads, he says, than build more.