schrod

例句：

1. 1. The steel beam supports the roof of the building.
   这个钢梁支撑着大楼的屋顶。
2. 2. Steel is a material that can be easily shaped and formed.
   钢铁是一种可以轻易塑形和成型的材料。
3. 3.Steel is often used in construction because it is strong and durable.
   由于它既坚固又耐用，钢常用于建筑中。