单词 | planetarium |
释义 | planetariumnoun plan·e·tar·i·um ˌpla-nə-ˈter-ē-əm plural planetariums or planetaria ˌpla-nə-ˈter-ē-ə 1 : a model or representation of the solar system 2 a : an optical device for projecting various celestial images and effects b : a building or room housing such a projector |
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