But the existing automation trickling irrigation technology will have higher cost, if using in express highways.
但现有的自动化滴灌技术如果用于高速公路，成本较为高昂。
In the construction of express highways in mountainous areas in west China, landslide or failure of the mudstone slopes often occur.
中国西部山区泥岩地层中修建高速公路，泥岩边坡常发生变形失稳破坏。
Traffic has also shut down on most of the region's highways and express railways.
该地区大部分高速公路和高速铁路的交通也受到阻断。
Snowplows on the major express way and highways are clearing snow day and night.
各大快速路，超速公路上的铲雪车正在不停的铲雪。
Snowplows on the major express way and highways are clearing snow day and night.
各大快速路，超速公路上的铲雪车正在不停的铲雪。
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