lantern slide
uk
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/ˈlæn.tən ˌslaɪd/us
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/ˈlæn.tɚn ˌslaɪd/ noun a glass sheet with a painted or photographic image used, especially in the past, to produce a larger image by shining light through it in a machine called a magic lantern: Lantern slides of each image were made, and projected on a screen. 每张图片都制作了玻璃幻灯片，并投影在屏幕上。