名词
中文翻译：Unknown
同义词：
['three beams', 'three pillars', 'three supports']
例句：
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1. Thebridge is supported by three beams.
这座桥由三根梁支撑。
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2.The building was constructed with three pillars.
这栋建筑是用三根柱子建造的。
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3.The roof of the house is supported by three beams.
这所房子的屋顶是由三根梁支撑的。