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【最新彩神APP争霸网址app_最新彩神APP争霸网址app官网】Daily work of staff members from Guiyang high

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A staff member from Guiyang high-speed railway maintenance division clears up vines on a protective net over a tunnel for Shanghai-Kunming high-speed train in southwest China's Guizhou Province, Feb. 21, 2019. The division's main task is to check and repair the facilities on the railway for high-speed trains threading through Guizhou Province where karst landform poses a threat to the security to the passing trains. (Xinhua/Liu Xu)