钢梁

例句：

1. 1. The bridge is made ofsteel beams and steel girders.
   这座桥由钢梁和钢桁架制成。
2. 2. The engineer designed the steel beams to support the weight of the building.
   工程师设计了钢梁来支撑建筑物的重量。
3. 3. The steel beams are strong enoughto withstand heavy loads.
   这些钢梁足够坚固，能够承受重载。