a long strong iron or steel bar used for building bridges and the framework of large buildings (桥或建筑物的)梁,主梁,桁架 It was a confusing picture of pipes and girders. 这是一幅管道和大梁的混乱画面。 The unfinished building with its blue girders was being used as a huge climbing frame. 这座未完工的大楼有蓝色的大梁,当时正被人们当作游乐用的大型攀爬架。
Word Originearly 17th cent.: from gird in the archaic sense ‘brace, strengthen’.