名词
中文翻译：平梁
同义词：
['straight beam', 'flat bar例句：1. The engineer used a flat beam to support the roof.（工程师用一根平梁支撑屋顶。）']
例句：
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1. The engineer used a flat beam to support the roof.
工程师用一根平梁支撑屋顶。
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2.The carpenter built a flat beam for the door frame.
木匠为门框制作了一根平梁。
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3.The beam was so flat that it could hold the weight of the house.
这根梁非常平直，足以支撑起房子的重量。