欢欢５岁，骑那种后轮带两个小轮子的自行车已经快有两年的时间了，且上车、下车、拐弯都熟练自如。一天，我给她拆去了那两个小后轮，让她练习骑真正的自行车。我扶她上了车，推着她往前骑。她走得很平稳，也挺像那么回事儿。可我一撒手，她立刻就倒下，再来，再倒，一连... Huanhuan 5 years old, riding the kind of rear wheel with two small wheels of the bike has been almost two years, and get on the train, get off, turn are skilled. One day, I removed her two small rear wheels for her to practice riding a real bicycle. I helped her get on the car, pushing her forward riding. She walked very smoothly, but also quite like that thing. But I let a hand, she immediately fell, again, again, a ...