名词
中文翻译：铁
同义词：
['steel', 'iron', 'steel']
例句：
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1.The construction of the bridge required a lot of steel.
建造这座桥需要大量的钢材。
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2. He used his trusty old hammer to pound out the nails for the new door.
他用他那把旧锤子敲打钉子，为新门做准备。
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3. Steel is stronger than wood and can be used to make buildings and bridges.
钢铁比木头更坚固，可以用来建造建筑物和桥梁。