名词
中文翻译：方铁
同义词：
['squared steel', 'squared metal']
例句：
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1.The construction site needed a lot of square iron to support the heavy equipment.
工地需要大量的方铁来支撑重型设备。
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2.The square iron was used to reinforce the wall.
方铁被用来加固墙壁。
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3. The square iron was shaped into various shapes for different purposes.
方铁被制成各种形状以适应不同的用途。