truss space

例句：

1. 1.The engineer designed the trusses to support the weight of the building.
   工程师设计了桁架来支撑建筑物的重量。
2. 2.The trusses were constructed using steel beams and crossbeams.
   桁架使用钢梁和横梁建造。
3. 3.The trusses are essential for the structural integrity of the building.
   桁架对于建筑的结构完整性至关重要。