英语听力:自然百科 古格:消失的西藏王朝—20(在线收听

 Tsering recons these caves could have stored food and supplies to the last year. So in theory, Guge could have held out for a while. Apparently, these secret passages also allowed the besieged people in Guge access to water. Some passages led to an exit near the t* river. With food and water available, Tsaparang held out for close to a month, before the L* stepped out of the offensive. By now, the invaders have taken over the unprotected lower sections of the citydom and have gained a crucial bargaining chip in the process, thousands of Guge prisoners. Halfway up the citydom stands very perticular stone partition, unlike anything else found in Tsaparang.

-The wall is very interesting. It's built of stone whereby most of the other buildings were built primarily of g* earth or m*brick. It doesn't have any obvious habitational function. It doesn't have any obvious defensive function. So why's the wall there?
If storming the citydom through the tunnels was impossible, then the only other option would be to build a siege tower, and by the most ruthless means, on the backs of the captured Guge prisoners.
The royal preaching was virtually unavailable. The L* army reached the shelf beneath the sheer summit. They were stuck here for some time, around one month, so they began to build a siege tower, with pressed Guge labor. They had to bring stones from black mountain on the far side of the S* River.
  原文地址:http://www.tingroom.com/lesson/zrbaike/2013/282543.html