名词
中文翻译：钢柱
同义词：
['steel rod', 'steel beam', 'steel post']
例句：
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1.The construction worker used a steel pole to support the roof.
建筑工人用一根钢柱支撑屋顶。
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2.The steel pole was strong enough to hold up the heavy tree branches.
这根钢柱足够坚固，能够支撑住沉重的树枝。
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3. The steel pole was used as a stake for marking the boundaries of the construction site.
这根钢柱被用作标记工地边界的桩子。