tiza

例句：

1. 1. The old iron gate is still standing after centuries of use.
   这个古老的铁门在数百年的使用后依然屹立不倒。
2. 2. Steel is stronger than iron and can be used for making tools and machines.
   钢比铁更坚固，常用于制造工具和机器。
3. 3. He was impressed by the quality of the new steel products on display.
   他对展出的新产品的质量印象深刻。