high-type highways 高等级公路
Nowadays, people pay more and more attention to the relations between the planting and the safety of high-type highways.
在高等级公路中，绿化与安全的关系问题越来越为人们所重视。
The paper summarizes the shortcomings of present highways, and expounds the concept and the significance of rain and snow prevention expressway of new type.
总结现有公路的不足之处，提出新型防雨雪高速公路概念，并对防雨雪高速公路的意义及必要性进行阐述。
The extension line type intersection is a special intersection for highways in mountainous areas.
展线型立交是山区道路中的特种立交。
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