beam stanchion

例句：

1. 1. The beam of the roof is supported by a steel brace.
   屋顶的梁由一根钢架支撑。
2. 2. The beams are too weak to support the weight of the building.
   这些梁太弱了，无法承受建筑的重量。
3. 3. The beams were made from wood and have been replaced with steel ones.
   这些梁是用木头做的，现在已经换成了钢制的。