求翻译：　　节能环保快速车的原理，是通过链条变速，普通的自行车直接是脚蹬大轮盘，带动后轱辘。它的区别就是增加它的速度了。普通自行车就是这个轮盘加这个轮盘，邱宗林现在就是加了四个轮盘，用脚蹬一圈，能跑四圈半，能跑八米 。是什么意思？

Fast cars principle of energy conservation and environmental protection, variable speed through the chain ordinary bicycle pedal big roulette directly driven wheels. Its distinction is to increase its speed. Ordinary bicycle roulette plus roulette, Qiuzong Lin now is to add four wheel, pedal lap, ab

　　Energy-saving principle of fast cars, is through the chain speed, normal bike direct is the pedal disc, after drivin