translation.en: So I'm an academic at MIT, and I'm a mechanical engineer, so I can do things like look at the type of terrain you want to travel on, and figure out how much resistance it should impose, look at the parts we have available and mix and match them to figure out what sort of gear trains we can use, and then look at the power and force you can get out of your upper body
translation.zh: 我是麻省理工学院的学者，我也是一个机械工程师 我可以通过观察你所行进的路面的类型 计算出它会产生多大的阻力 通过了解我们已有的零件，混合并拼凑它们 想出我们可以使用哪一种变速器 通过考虑上肢可以产生的能量和力气