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
A horizontal beam, as of steel or wood, used as a main support for a building or bridge.
吊床一种易摆动的吊床或躺椅，用帆布或厚网挂在两树或别的支撑物之间
A hanging, easily swung cot or lounge of canvas or heavy netting suspended between two trees or other supports.
撑裙箍带裙环女裙中的很轻的环形支撑物
One of the lightweight circular supports for a hoop skirt.
