How dangerous is rock climbing, to be suspended in mid-air by a nylon rope or perched on a cliff with the smallest of footholds, blown about by a stiff wind hundreds of feet up above nothing but rock?
攀岩，那種「在滑不溜丟的岩石上爬得高高的，摔下來就像雞蛋碰石頭」的壁虎功，究竟有多危險？