bucket brigade device

例句：

1. 1. The firefighters used bucket brigade devices to rescue the trapped people.
   消防员使用桶式救生设备来营救被困的人们。
2. 2.The new design of the bucket brigade device has greatly improved its efficiency.
   新型的桶式救生设备大大提高了其效率。
3. 3. In emergencies, the bucket brigade device is often used as a lifesaving tool.
   在紧急情况下，桶式救生设备常常被用作救命工具。