axle nut

例句：

1. 1. The car's axlenuts were loose and needed tightening.
   这辆车的轴螺母松动了，需要拧紧。
2. 2. The mechanic replaced the axle nut with a new one.
   机械师用一个新的轴螺母替换了旧的。
3. 3. The car's axlenut was causing the wheel to wobble.
   这辆车的轴螺母导致车轮摇摆。