GB14747-1993儿童三轮车安全要求
Safety requirements for tricycles for young children
为了让儿子走得更好，我们买了一辆儿童用的脚踏三轮车，将他的脚掌绑在车的脚踏板上，然后推动三轮车，强化性锻炼他的腿力；
In order to improve it , we bought a small tricycle , tied his feet on the pedals , and push the tricycle forward which let his legs exercise intensively .
儿童三轮车