propped cantilever beam

例句：

1. 1.The roof was propped up by awooden beam.
   屋顶由一根木梁支撑着。
2. 2. The team needs to prop up theirweakest player.
   球队需要支持他们的最弱球员。
3. 3. The old man was proppedup in bed with a pillow and blanket.
   老人用枕头和毯子支撑着躺在床上。