在“世界屋脊”修建世界上海拔最高、线路最长的高原冻土铁路,这是人类铁路建设史上前所未有的壮举,也是一项举世瞩目的伟大工程。青藏铁路开工以来,数以万计的建设者远离亲人,在雪域高原上冒严寒、顶风沙、抗缺氧、斗冻土,战胜了一个又一个困难,跨越了一道又一道障碍,谱写了人 It is an unprecedented feat in the history of human railway construction and a great project attracting worldwide attention. It is the highest roof in the world to build the tallest plateau permafrost railway in the world roof. Since the inauguration of the Qinghai-Tibet Railway, tens of thousands of builders have been away from their loved ones. They have taken drastic measures such as cold and windy sand, anti-anoxia and permafrost on snowy highlands, overcoming difficulties one by one and crossing one obstacle after another. people