A light pointer is often useful with a slide projector.
光指示器经常与幻灯片放映机一起使用。
huàn dēng piàn fàng yìng jī
slide projector
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相似单词
幻, 幻灯, 幻灯放映员, 幻灯机, 幻灯片, 幻灯片放映机, 幻灯影片, 幻方, 幻觉, 幻觉病,