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0 a type of bicycle gear that works by moving the bicycle chain from one sprocket wheel (= a wheel with a row of tooth-like parts) to another
Set the rear derailleur in the lowest gear, with the chain on the biggest sprocket wheel at the back. 把后轮的变速器调到最低挡,就是让链条在后面连到最大的链齿上。
derailleur gears 换挡齿轮
最新单词
European
2021年8月16日
每日一词
Shimmer