摘要
Tibet,known as"the roof of the world",is the highest point on the earth,Historically,transportation was carried out by beasts of Burden and man power,Building a modern road is therefore of paramount significance for this region,-Ed.
Tibet,known as'the roof of the world',is the highest point on the earth,Historically,transportation was carried out by beasts of Burden and man power,Building a modern road is therefore of paramount significance for this region,-Ed.
