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![TheopeningoftheBeijing—Zhangjiakouhigh-speedrailwayt...]( "TheopeningoftheBeijing—Zhangjiakouhigh-speedrailwayt...")
TheopeningoftheBeijing—Zhangjiakouhigh-speedrailwayt...
问题详情： TheopeningoftheBeijing—Zhangjiakouhigh-speedrailwaytookplaceinDecember,2019.TherailwayisamilestoneinChina’srailwaydevelopmentbecauseithasusedthelatesttechnologiesinrailwaybuilding.Ther...
