名词
中文翻译：Unknown
同义词：
['iron-hard', 'steely-eyed']
例句：
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1. The iron ore is mined from the mines in our country.
我国从矿山开采铁矿石。
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2. He has a steely-eyed look that makes him seem unapproachable.
他有着钢铁般的眼神，让人感觉难以接近。
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3. The steel industry is one of the most important industries in our country.
钢铁工业是我国最重要的产业之一。