你将幻灯机还给我了。You gave me back the projector.我的办公室里有一架新的幻灯机.There is a new projector in my office.我们已经准备好了幻灯机来演示火星人是怎么采集外界信息的了.We've rigged the epidiascope to refIect whatever the Martian Iens picks up....

“幻灯机”的英语可以翻译为：epidiascope ...