reinforced opening

例句：

1. 1. The steel beams were reinforced to withstand the weight of the building.
   这些钢梁被加固以承受建筑物的重量。
2. 2. The reinforced opening in the wall allows for easy access to the attic.
   墙上的加固开口便于进入阁楼。
3. 3. The reinforced opening was designed to prevent water from seeping into the basement.
   加固开口的设计是为了防止水分渗入地下室。