Definition: a very strong metal made from iron, used for making knives, machines, etc. Level: B2
建筑行业经常使用耐用的钢管进行基础设施项目。
The construction industry often uses durable ___steel pipes for infrastructure projects.
在现代厨房中，不锈钢水槽既卫生又耐用。
A stainless ___steel sink is both hygienic and long-lasting in modern kitchens.
我欣赏古剑刀刃那凉爽抛光的钢。
I admire the cool, polished ___steel of the ancient sword's blade.
