1.实物幻灯机,透反射两用幻灯机
1.a device for projecting an enlarged image of an opaque or transparent object onto a screen
1.I told him to put the epidiascope in the front of the meeting room.
我叫他把幻灯机放在会议室的最前面。
2.I know where the epidiascope is.
我知道幻灯机在哪里。