“拉萨－北京”的公路平坦宽阔而又笔直，在花草茂盛的草原上一眼望去，路面像是一条由粗变细的黑线在无穷无尽地绵延，最后消失在不断向远方推移的天地交接处。由于长长的路上很少有交会车和行人，周围也没有参照物，所以有时时速尽管达到１００公里以上，却感到像在原地踏步 The Lhasa-Beijing highway is flat and straight, looking out over the lush grassland. The pavement resembles an endless stretch of thick, thick black lines that finally disappear into the constant transfer of distant land Department. Since there are few rendezvous cars and pedestrians on the long road and there is no reference around them, sometimes at a speed of over 100 km, they feel like they are standing still