xué / qí / chē / shí / kě / yǐ / xiān / zhuāng / fǔ / zhù / lún / děng / shú / liàn / le / zài / chāi / diào学骑车时可以先装辅助轮,等熟练了再拆掉。When learning to ride a bike, you can first install training wheels and remove them once you've become skilled.