metal scaffolding

例句：

1. 1.The construction site needed a metal scaffolding to support the heavy equipment.
   施工现场需要金属脚手架来支撑重型设备。
2. 2.The engineer used a metal scaffolding to build the bridge quickly.
   工程师使用金属脚手架快速建造了这座桥。
3. 3. The construction workers were using metal scaffolding to lift the heavy load.
   建筑工人正在使用金属脚手架来举起重物。