简单的幂函数

众多队伍施展浑身解数，竞赛通过被岩浆淹没的房间。他们踩着椅子跳出去、攀附在窗帘上，甚至抓着吊灯摆荡。真的，没有在开玩笑。。After surviving an IED explosion in combat overseas, a young soldier with the Army Motorcycle Unit is medically discharged with a broken back and leg. Against all odds he trains to make an impossible comeback as a motocross racer in order to support his family.。