downender

例句：

1. 1. The engineer designed a downender to help the workers move heavy materials.
   工程师设计了一个下倾器，帮助工人搬运重物。
2. 2.The downender was used to prevent water from flowing back into the reservoir during maintenance.
   下倾器被用来在维护期间防止水回流到水库中。
3. 3. The downender is a crucial component of the drainage system in the construction site.
   下倾器是施工现场排水系统中至关重要的部件。