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Beijing North Beijing-Zhang high-speed railway Beijing North Railway Station Beijing Winter Olympics
12-16
![The "4S shop" of Beijing North Railway has been transformed and upgraded to improve the efficiency of the Beijing-Zhangjiang high-speed railway[fig]](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACwAAAAAAQABAAACAkQBADs=)