西藏公安边防总队阿里边防支队马攸桥边境检查站,位于219国道上,环顾四周白茫茫一片,距离最近的日喀则仲巴县帕羊镇都在100公里以上,属于典型的无人区。马攸桥边境检查站驻地海拔4900米,冬季长达六七个月,最冷时零下三四十摄氏度,几乎每名民警的手上都有冻疮。由于空气含氧量低,民警们的嘴唇几乎全是乌的。加上气候干燥,没几个民警的嘴唇是不开裂的。由于蔬菜少缺少多种维生素,刷牙时常常牙龈出血。日前,本刊记者在这个检查站采访时,民警们告 The border checkpoint of Yali You Border Bridge, the border security detachment of the Tibet Public Security Border Defense Corps, is located at State Road 219 and looks out over a vast expanse of white patches. The nearest town of Pagan, Zhongba County, Shigatse, is more than 100 kilometers away and is a typical no man’s land. The site of the Yau Ma Tau Bridge Checkpoint stands at 4,900 meters above sea level with a duration of six to seven months in winter and a minimum of 34 to 40 degrees Celsius in the coldest months. Frostbite is practiced in almost every civilian police hand. Due to the low oxygen content of the air, the police have almost all of their lips. Coupled with the dry climate, not a few civilian police lips are not cracking. Due to lack of vegetables less vitamin, brushing gums often bleeding. Recently, our correspondents interviewed at this checkpoint, the police told