retaining ring of tire

例句：

1. 1. The engineer designedthe retaining ring to support the weightof the car.
   工程师设计了保持环来支撑汽车的重量。
2. 2. The retaining ring ismade of stainless steel and is securely fastened to the wheel hub.
   保持环由不锈钢制成，并牢固地固定在轮毂上。
3. 3. The retaining ring prevents thetire from rolling out when the car isparked.
   保持环防止汽车停放时轮胎滚出。