我刚学会骑自行车,遇到紧急情况时,要刹车还要按铃,有时反应慢,就慌张起来。我想能否在左手刹车时,右手微微捏一下,铃就响,有多好呢!这样就不用把右手松开去按铃了。我去商店买了开关和电铃、二节电池,将电池作为电源,把铃安在车把上。利用稍微刹车时的力打开 I just learned to ride a bicycle. When an emergency occurs, I need to ring the brakes. Sometimes the response is slow and I panic. I think if I can use my left hand to brake, my right hand will pinch and the bell will ring. How good it is! This way, I don’t need to release my right hand to ring the bell. I went to the store to buy a switch, an electric bell, and two batteries. I used the battery as a power source and put Bell on the handlebars. Open with a little brake force