cycling1 cycling cycling Moving speed of the power of people bike to compete imhaneun game says. Human life by the wheel is used in the form of or bike from BC In the 19th century, what appeared was at the threshold. 1790, the first prototype of a bicycle who devised the French Comte de sibeurak Earl, he and two vertical wooden wheels to create a bag, this type of bike made by connecting hoengmokeuro. At this po.. 2012. 8. 13. 이전 1 다음
