steel support structure

例句：

1. 1. Thebridge is made of steel and has asteel support structure.
   这座桥是用钢建造的，有一个钢支撑结构。
2. 2. The constructionof the new building required a steel supportstructure to hold up the weight.
   新建筑的建设需要用到钢支撑结构来承受重量。
3. 3. The steel support structure was designed towithstand heavy loads.
   这个钢支撑结构被设计用来承受重负载。