braking jack

例句：

1. 1. The car was pulled over by thepolice for speeding.
   这辆车因为超速被警察拦下。
2. 2. The driverhad to use a braking jack to lower thevehicle's gears.
   司机不得不使用刹车千斤顶来降低车辆的档位。
3. 3. The mechanic used a brakingjack to remove the broken wheel from thecar.
   机械师用刹车千斤顶把断了的轮子从车上拆了下来。