high grade highway

• 高等级公路

high grade highway的用法和样例：

例句

1. The company's engineering and construction quality of highway construction market share in the region has been a leader.
   公司的工程施工质量和高等级公路施工市场占有率，在区域内一直处于领先地位。
2. The highway running through the Taklimakan Desert is a long-distance graded highway,the first one in the world built on shifting sands.
   穿越塔克拉玛干大沙漠的沙漠公路，是世界上首次在流动性大沙漠上修筑的长距离等级公路。