cantilever roof bar

例句：

1. 1.The cantilever roof bar is a crucial component of the building's structural integrity.
   悬臂式屋顶梁是建筑结构完整性的关键组成部分。
2. 2. The engineer carefully designed the cantilever roof bar to withstand the weight of the structure.
   工程师仔细设计了悬臂式屋顶梁，以承受结构的重量。
3. 3. During construction, the cantilever roof bar was installed to provide additional support for the roof.
   在建造过程中，安装悬臂式屋顶梁是为了为屋顶提供额外的支撑。