vertical prop

例句：

1. 1. The elevator's vertical prop is designed to provide a smooth and safe ride.
   电梯的垂直支撑设计用于提供平稳和安全的乘坐体验。
2. 2. In construction, the vertical prop is used to support the weight of the building.
   在建筑中，垂直支撑用于支撑建筑物的重量。
3. 3. The engineer carefully checked all the vertical prop systems before starting the project.
   工程师在开始项目之前仔细检查了所有垂直支撑系统。