Kevin learned to ride a bike without the training wheels right before he turned six last year. He just has not been out riding much. This is a new bike that Brian got Kevin for his 7th birthday. Kevin is not getting on or off the bike all by himself yet. But, we are all happy that he can do it. He didn't have to wait till 15 years-old to learn, like his mommy did. Heehee.凯文教训骑自行车车轮的训练之前，他去年把6 。他只是还没有和骑了很多东西。这是一个新的自行车布赖恩了他7凯文的生日。凯文没有上下车的自行车全部由他本人还没有。但是，我们都高兴的是，他能做到这一点。他没有等到15日学习，像他妈妈做