highway-高速公路highwayn.公路；(水陆空)直接航线或路线highway mountain hazards公路山地灾害highway landscape design高速公路景观设计highway net system model公路网系统模型Highway in mountain area山区公路highway earthwork roadbed公路土方路基Highway widening projects旧路改扩建工程highway freight terminals货运枢纽highway in reservoir area库区路段highway construction item公路建设项目highway investment theory道路投资理论