这是一根离地面沙坑有半米高的钢索,紧绷相距约30米的两根铁柱之间,铁柱上面还平行地拉着一根钢丝,钢丝上每隔30公分垂吊着铁环,铁环离钢索1米多高,学生双手可以拽住铁环,在钢索上从这根铁柱走到那根铁柱,中途不得掉下沙坑,这是一个训练学生勇气胆量的科目。 This is a rope half a meter above the ground bunker, tightened between two iron pillars about 30 meters apart, and a steel wire is pulled parallel above the iron pillars, hanging every 30 cm on the wire Iron ring, iron ring from the cable 1 meter high, the students can pull the ring with both hands, from the iron in the cable to the root of that iron column, not to fall halfway through the bunker, which is a training courage students Courageous subjects.