castellated beam

例句：

1. 1. The bridge is made of castellated beams to support the weight of the road.
   这座桥由拱形梁支撑，以承受道路的重量。
2. 2.The architect designed a castellated beam structure for the new office building.
   建筑师为新办公楼设计了一个拱形梁结构。
3. 3.The beam was reinforced with steel to prevent it from breaking under load.
   该梁被加固了，以防止在负载下断裂。