Worker Chen Chongying polishes a rail at Suzhou Railway Station in Suzhou, east China's Jiangsu Province, Feb. 7, 2018. Engineers examine the rail every night to ensure the safety of trains and passengers. (Xinhua/Ding Ting)
Engineers examine rail to ensure safety of trains and passengers
Source:Xinhua| 2018-02-07 22:06:34|Editor: Mengjie
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