坐墊高度調整 & 安全騎乘方式

Loading...

Sign in or sign up now!
Alert icon
Upgrade to the latest Flash Player for improved playback performance. Upgrade now or more info.
25,908
Loading...
Alert icon
Sign in or sign up now!
Alert icon

Uploaded by on May 14, 2009

No description available.

Category:

Sports

Tags:

License:

Standard YouTube License

  • likes, 0 dislikes

Link to this comment:

Share to:
see all

All Comments (2)

Sign In or Sign Up now to post a comment!
  • 學校體育課應該教[如何正確騎自行車],因為自行車、高爾夫、游­泳算是少數幾個可以玩到老的運動,但是其中只有自行車除了運動還­可以用來通勤,重要程度不應該被低估才對吧~

  • 這位大哥教學太棒啦

    

Loading...
Alert icon
0 / 00Unsaved Playlist Return to active list
    1. Your queue is empty. Add videos to your queue using this button:
      or sign in to load a different list.
    Loading...Loading...Saving...
    • Clear all videos from this list
    • Learn more