钢铁 gāngtiě steel
How to remember 钢铁: 钢 steel + 铁 iron = steel.
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How it is used
- 'Steel (and iron)' - the material and industry - 钢铁工业 (gāngtiě gōngyè) the steel industry.
- Also figurative for hard, unyielding will - 钢铁般的意志 (gāngtiě bān de yìzhì) an iron will; 钢铁长城 an impregnable defense.
- A compound of 钢 (steel) + 铁 (iron), typically referring to steel as an industrial material.