【最新今期黄大仙诗生肖_最新今期黄大仙诗生肖官网】Engineers examine rail every night to ensure safety in Urumqi, NW China

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Worker Ren Peng checks maintenance worklist at the Xinjiang section of Lanzhou-Xinjiang high-speed railway in Urumqi, northwest China's Xinjiang Uygur Autonomous Region, Feb. 5, 2018. Engineers examine the rail every night to ensure the safety of trains and passengers. (Xinhua/Hu Huhu)

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