| 单词 | 桁架 |
| 释义 | 〔principal〕The main truss or rafter that supports and gives form to a roof.橼木：构成或加固屋顶用的桁架或橼木〔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 |
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