名词
中文翻译：放映机
同义词：
['projectionist', 'projector']
例句：
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1.The teacher showed us how to use the projector.
老师向我们展示了如何使用投影仪。
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2. The movie was so good that I forgot I had a projector in my room.
这部电影太精彩了，我竟然忘了我房间里有个投影仪。
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3. The students used their projectors to show the slides during the presentation.
学生们用他们的投影仪在演示中展示了幻灯片。