Chinese farmer walks amid a heavy sand storm in Minqin county, in China's Gansu province.
中国甘肃民勤县，一个农民在一场沙暴中艰难地行走。
According to path analysis upon the invading cold air on surface, the cold air paths causing heavy sand storm processes in Shaanxi are divided into the west, the northwest, and the north way.
根据地面冷空气入侵陕西的路径分析，将造成陕西强沙尘暴天气的冷空气路径分为西路、西北路、北路三条。
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