durum

例句：

1. 1. The construction of the bridge was a major project for the city.
   这座桥的建设是该市的一项主要工程。
2. 2. Steel is stronger than iron and can be used to make tools.
   钢比铁更坚固，可以用来制作工具。
3. 3. The car was made from steel, which makes it more durable.
   这辆车是用钢制造的，因此更加耐用。