A vehicle consisting of a light frame mounted on two wire-spoked wheels one behind the other and having a seat, handlebars for steering, brakes, and two pedals or a small motor by which it is driven.

• 自行车一种轻型结构的运载工具，由前后两个辐条轮子支撑，有车座、操纵扶手、制动器、两个脚踏板或一个小马达