ratchet wheel ring

例句：

1. 1.The car's engine ratchet wheel is worn out.
   这辆车的引擎棘轮磨损了。
2. 2. The mechanic replaced the ratchet wheel on the gearbox.
   机械师更换了变速箱上的棘轮。
3. 3. The engineer used a ratchet wheel to tighten the bolts.
   工程师使用棘轮来紧固螺栓。