trunk highways

• 干线公路

trunk highways的用法和样例：

例句

1. Many cities show a radial pattern of main highways.
   许多城市的干线公路都呈放射状模式。
2. Properly arrange the construction of main highways which connect west China and middle part of China so as to give full play to the transportation system in western China.
   要同步安排好与西部地区连通的中部地区干线公路的建设，保证西部运输通道系统能力的发挥。