CG - 2可以使用在所有变速自行车和许多3段变速与脚踏车自行车。
The CG-2 works on all derailleur bikes and many 3-speed and coaster brake bikes.
地板上陈列着各式各样的电动玩意，有电动自行车、电动脚踏车，甚至还有电动赛车。
The floor is also packed with an assortment of electric things including a bicycle, a moped and even a battery-powered racing car.
他建议患者骑三轮车，或使用固定脚踏车或训练器——这是设备将公路自行车转变为原地脚踏车。
He recommends that patients ride tricycles, or use stationary bikes or trainers - devices that turn road bikes into stationary ones.
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