T-beam with single reinforcement

例句：

1. 1. The engineer designed the bridgeto be strong enough for a heavy truck.
   工程师设计这座桥足够坚固，能承受重型卡车的重量。
2. 2. The beam is madeof steel and has been reinforced withsteel bars.
   这个梁是用钢制造的，并且用钢筋加固了。
3. 3. The beamwas used as a support for the buildingduring construction.
   在建筑施工期间，这个梁被用作支撑结构。