tripping device

例句：

1. 1. The elderly woman was tripping over her own feet as she walked down the stairs.
   这位老妇人在走下楼梯时绊倒了自己。
2. 2.The child was tripping on the loose gravel and fell to the ground.
   这个孩子因为脚下的松散砾石而摔倒了。
3. 3.The construction site had several tripping devices installed to prevent accidents.
   施工现场安装了多个绊脚装置，以防止事故的发生。