wedge support

例句：

1. 1.The engineer used a wedge to lift the heavy door open.
   工程师用楔子把沉重的门打开。
2. 2.The carpenter used a wedge to drive in the screws for the new cabinet.
   木匠用楔子把新橱柜的螺丝钉推进去。
3. 3.The wedge support was designed to distribute the weight evenly across the floor.
   楔形支撑设计用来均匀地分散地板的重量。