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IELTS BNC: 2282 COCA: 2152

B2 a strong metal that is a mixture of iron and carbon, used for making things that need a strong structure, especially vehicles and buildings

steel girders/rods/struts钢梁/条/柱
a steel helmet钢盔
a steel-plated army truck军用装甲卡车

More examples

a steel mill

Coke is used in the production of steel.

The concrete is strengthened with steel rods.

Guitar strings nowadays are made from steel or nylon.

The gates were locked with a padlock and a heavy steel chain.

steel yourself

to force yourself to get ready to do something unpleasant or difficult下决心做;横下心

[ + to infinitive ] She steeled herself to jump out of the plane.她心一横,跳出了飞机。

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