episcopic projector

例句：

1. 1. The episcopal projector is used to project images onto a large screen.
   大视场望远镜投影仪被用来将图像投射到一个大屏幕上。
2. 2. The episcopal projector was designed for educational purposes.
   大视场望远镜投影仪是为教育目的设计的。
3. 3. The episcopal projector was used to demonstrate the principles of optics.
   大视场望远镜投影仪被用来演示光学原理。