derailleur 的定义
- a gear-shifting mechanism on a bicycle that shifts the drive chain from one sprocket wheel to another.
更多derailleur例句
- Shift the derailleur back to the smallest cog or chainring, loosen the cable bolt, and take up any slack before tightening it again.
- Clamp the cable in the derailleur as normal, then shift the bike to the largest cog or chainring and let it sit for ten minutes or so.