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TOEFL BNC: 21774 COCA: 20797

girder

noun
/ˈɡɜːdə(r)/
/ˈɡɜːrdər/
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  1. a long strong iron or steel bar used for building bridges and the framework of large buildings(橋或建築物的)梁,主梁,桁架
    • It was a confusing picture of pipes and girders.這是一幅管道和大梁的混亂畫面。
    • The unfinished building with its blue girders was being used as a huge climbing frame.這座未完工的大樓有藍色的大梁,當時正被人們當作遊樂用的大型攀爬架。
    Topics Buildingsc2
    Word Originearly 17th cent.: from gird in the archaic sense ‘brace, strengthen’.

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