horizontal beam的用法和样例：
例句
- The horizontal beam that forms the upper member of a window or door frame and supports the structure above it.
(门窗的)过梁构成门窗上部框架的平行梁木，并支持上面的构架 - The horizontal beam on a cross or gallows.
横梁十字架或绞架上的水平横梁 - A horizontal beam, as of steel or wood, used as a main support for a building or bridge.
大梁一水平的铁制或木制的桁条，用来作为建筑物或桥梁的主要支撑物
