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根据UIC(国际铁道联盟)的定义,高速铁路是指通过改造原有线路,使营运速率达到每小时200公里以上,或者专门修建新
According to UIC (International Railway Union) definition, high-speed rail refers to the operation of the original line by transforming the operation rate of more than 200 kilometers per hour, or to build a new