The bionic boot worked through the same impact tension that gives us bad knees and a chronic need for new running shoes ; it simply reversed this tension via springs and elastic to create propulsion back up in the air 仿生弹跳器同样是利用冲击力的原理来工作的,这种冲击力对我们的膝盖是有害的,因此强烈地需要一种新型跑鞋;它直接将这种冲击的压力通过弹簧的弹性来改变力的方向从而产生一种向上的推力。