天然路
It was discovered that 87% of blowouts are caused by human activities, with plowing, grassland motor vehicle natural road, and resident related activities counting for 35.8%, 34.8%, and 16% respectively.
发现87%的风蚀坑由人类活动引起。其中翻耕、道路、人类定居活动诱发的风蚀坑分别占35.8%、34.8%和16%。
Pavement made of layers of compacted broken stone, now usually bound with tar or asphalt. natural road, partly metalled
碎石路用几层集中起来的碎石铺筑的人行道,现在一般与焦油或沥青混合天然道路,一部分铺碎石
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