box girder

例句：

1. 1. The engineer designed the bridge with a box girder to resist high winds.
   工程师设计了一座桥梁，使用箱形梁来抵抗强风。
2. 2. The construction company used box girders to build the new office building.
   建筑公司使用箱形梁建造了新的办公楼。
3. 3. The steel box girder was installed in the middle of the bridge.
   钢制的箱形梁被安装在桥的中间。