名词
中文翻译：边际梁
同义词：
['margin beam', 'marginal support beam例句：1. The beam was so weak that it could barely hold the roof.（这个梁太弱了，几乎支撑不了屋顶。）']
例句：
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1. The beam was so weak that it could barely hold the roof.
这个梁太弱了，几乎支撑不了屋顶。
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2.The engineer used a new method to reinforce the beams.
工程师用一种新的方法来加固梁。
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3.The beam is crucial for supporting the weight of the building.
这个梁对于支撑建筑物的重量至关重要。