| 单词 | rigid framework |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔truss〕A rigid framework, as of wooden beams or metal bars, designed to support a structure, such as a roof.桁架：用木棒或金属棒做成的坚硬的构架，用于支撑屋顶等结构美国传统 |
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