Tiezene

例句：

1. 1.The iron is very strong and can be used for many purposes.
   这铁非常坚固，可以用于许多用途。
2. 2. Steel is a type of metal that is stronger and more durable than iron.
   钢铁是一种比铁更坚固、更耐用的金属类型。
3. 3.The construction of the bridge was made with steel beams.
   这座桥的建设使用了钢梁。