梁, 横梁
a long, sturdy piece of squared timber or metal spanning an opening or part of a building, usually to support the roof or floor above
示例:• The old house had exposed wooden beams.老房子有裸露的木梁。• Steel beams were used to construct the skyscraper.摩天大楼的建造使用了钢梁。同义词:girderjoistraftersupportbar