beam support

例句：

1. 1.The beam supports the roof of the building.
   这个梁支撑着建筑物的屋顶。
2. 2. The beam is too weak to support the weight of the roof.
   这个梁太弱，无法支撑屋顶的重量。
3. 3.The beam supports the load of the floor.
   这个梁承受着地板的负载。