<正>如果你看过记录片《徒手攀岩》,一定会被片中主角——攀岩运动者亚历克斯·霍诺德所震撼。他无绳索、无工具,仅靠一袋镁粉,徒手攀上了美国约塞米蒂国家公园3000英尺高的酋长岩。Alexander Honnold was bornon August 17,1985.Heisan American rock climber best known for his free solo ascents(攀登) of big walls.