犯罪是一种极其复杂的社会现象，是普遍存在于世界各国的严重的国际性社会问题之一。
Crime is a very complicated phenomenon and is widely distributed among all the countries as a severe social problem.
煤与瓦斯突出是发生在煤矿生产中的一种极其复杂的地质动力现象，是煤矿生产中最严重的灾害之一。
The coal and gas outburst is an extremely complex geological power phenomenon that occurs in the coal mine production, is one of most serious disasters in the coal mine production.
古浪县的荒漠化土地面积占全县总面积的85.94%，存在着较为严重的荒漠化现象，生态环境极其脆弱。
Gulang County has serious desertification status, eco-environment is instable especially and its area of land desertification has occupied 85.94% of all.
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