【法语频道纪录片《爸爸！这列火车开往拉萨》】一对加拿大父子，四十年间，他们与世界上海拔最高、线路最长的高原铁路“青藏铁路”之间有着怎样的故事？关注CGTN法语频道纪录片《爸爸！这列火车开往拉萨》。What has connected a Canadian father and son to the Qinghai-Xizang Railway – the world's highest and longest railway – for four decades? Discover their moving story in the CGTN documentary: "Dad, This Train is Going to Lhasa!" http://t.cn/AXoGs2MZ