retroflex stop

例句：

1. 1. The car's retroflex stop is activated by pressing the brake pedal.
   按下刹车踏板激活汽车的回旋制动器。
2. 2. The engineer used a retroflex stop to slow down the train before it hit the bridge.
   工程师使用回旋制动器减缓火车的速度，以免撞上桥梁。
3. 3. The driver applied the retroflex stop to prevent the vehicle from rolling backwards.
   司机应用回旋制动器以防止车辆向后滚动。