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自2000年10月21日零时起铁路进行了建国以来第三次大面积提速。通过这次重点在西部地区的提速，形成了全国“四纵两横”的铁路快速网络。据了解，为进一步加快铁路自身的发展以及适应世界铁路提速的历史潮流，铁道部还将在未来5年对京广线、哈大线、京秦线、京九线、皖赣线等12
Since the founding of the People’s Republic since the founding of the People’s Republic of China, the third large-scale speed increase since the zero hour on October 21, 2000. Through the acceleration of this key point in the western region, a nationwide “four vertical and two horizontal” railway rapid network was formed. It is understood that in order to further speed up the development of the railway itself and to adapt to the historical trend of speeding up of the world railway, the Ministry of Railways will also treat Beijing-Guangzhou Line, Harbin-Dalian Line, Beijing-Qinhuangdao Line, Beijing-Kowloon Line, Anhui-Jiangxi Line, etc. in the next five years