tripping bracket

例句：

1. 1.The car's brakes were worn out, so it wouldn't stop.
   汽车的刹车坏了，所以它停不下来。
2. 2.The old man was using a stopper to hold the door open.
   老人用一个止动器来保持门开着。
3. 3. The engineer replaced the faulty tripping bracket with a new one.
   工程师用一个新的绊脚板替换了损坏的部件。