The United States has one of the best highwaysystems in the world.
美国拥有世界上最好的高速公路系统之一。
2
The paper discusses the composition of highwaysystems for fee collecting and monitoring as well as the principal functions of every subsystem.
论述了公路监控和收费系统的组成，以及各个子系统的主要功能。
3
The highway traffic network construction in China is a developing trend. The highwaysystems at all levels in a region constitute the relatively closed network systems.