steel truss

例句：

1. 1. The engineer designed the steel truss to support the weight of the building.
   工程师设计了钢桁架来支撑建筑的重量。
2. 2. The steel truss was used as a structural element in the construction of the bridge.
   钢桁架作为结构元件用于桥梁的建设。
3. 3.The steel truss is strong and durable, making it ideal for outdoor structures.
   钢桁架既坚固又耐用，是户外结构的理想选择。