You have not get any slide projector, have you?
你没有幻灯机，对吗？
He adjusted the slide projector to focus the image.
他调整了投影仪使图像清晰。
The basic function of an overhead projector is similar to that of a slide projector.
投影仪的基本功能与幻灯机相似。
The basic function of an overhead projector is similar to that of a slide projector.
投影仪的基本功能与幻灯机相似。
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