名词
中文翻译：投影仪同义词
同义词：
['projector', 'projector machine', 'projection device']
例句：
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1. The teacher demonstrated the use of a colmascope to illustrate the concept of light and shadow.
老师演示了如何使用投影仪来说明光与影的概念。
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2. The engineer used a colmascope to analyze the performance of the new machine.
工程师使用投影仪分析了新机器的性能。
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3. The students were given a colmascope as part of their science fair project.
学生们作为科学博览会项目的一部分获得了一台投影仪。