ladder gang

例句：

1. 1. The laddergang was responsible for the construction of thebridge.
   梯子组负责建造这座桥。
2. 2. Theladder gang was a group of skilled workerswho were responsible for installing the new equipment.
   梯子组是一群熟练工人，他们负责安装新设备。
3. 3. The ladder gang wasworking on the roof when it suddenly startedraining.
   梯子组正在屋顶工作时，突然开始下雨了。