名词
中文翻译：简单精炼的铁
同义词：
['simple', 'refined', 'pure', 'unrefined']
例句：
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1.The steel is made from simple refined iron.
这种钢是由简单的精炼铁制成的。
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2. The construction of the bridge required simple refined iron.
建造这座桥需要简单的精炼铁。
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3. The quality of the iron is determined by its simplicity and refinement.
铁的质量取决于其简单性和精炼程度。