main steering arm

例句：

1. 1. The car's main steeringarm is broken, so we need toreplace it immediately.
   车的主转向臂断了，所以我们需要立即更换。
2. 2. The engineercarefully adjusted the main steeringarm to ensure smooth operation.
   工程师仔细调整了主转向臂，以确保操作顺畅。
3. 3. Main steering arm failure can causesevere vehicle handling problems.
   主转向臂故障会导致严重的车辆操控问题。