...
Sheldon交朋友事件。(攀岩恐高症)...
口令信号对攀登和保护者间的协调和互检非常重要。不但对彼此没有很长合作的人重要,就是很有经验,合作多年的同伴也应维持一定的口令。有很多事故...
Rock climbing is the original extreme sport. Basically , rock climbing is going from the bottom of a wall to the top and then back down again. The main goal is to have fun while doing so and to pref...