消防學(xué)員席地而坐,雙手撐地維持身體平衡,雙腿懸空向前伸展,全程不觸碰前方座椅借力。沒有外物支撐緩沖,全靠腰腹、上肢與腿部肌群發(fā)力支撐軀體,長時(shí)間靜態(tài)保持動(dòng)作,酸脹感層層疊加,卻無一人松懈退讓。
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