名词
中文翻译：屋顶支撑
同义词：
['roofing', 'roof trusses', 'roof joists']
例句：
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1.The old house needed new roof supports to keep it standing.
这所旧房子需要新的屋顶支撑来保持其站立。
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2. The engineer designed the building with proper roof supports to prevent collapse.
工程师设计了这座建筑，并使用了适当的屋顶支撑以防止倒塌。
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3. The construction crew installed the new roof supports before starting the renovation.
施工队在开始翻新之前安装了新的屋顶支撑。