单词	光打孔卡片
释义	光打孔卡片photo aperture card，PAC
随便看	science education history science education information analysis science education information analysis center science education information analysis center--seiac science education information analysis center，seiac science. elements of natural science equipment science experiment science facilities science fair science fiction science-fictional science-fictionalise science-fictionalised science-fictionalising science-fictionalize science-fictionalized science-fictionalizing science fictioneer sciencefictioner science-fiction film science fiction movie science foundation science history science information