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单词	fluor crown
释义	fluor crown noun : a crown glass that contains fluorine, that has a low refractive index, and that is used especially for optical equipment Word History Etymology fluor-
随便看	sprung up sprung weight sprung-rus sprunt spry spryer spryest sprylier spryliest spryly spryness sprynesses SPS spt spud spud casing spudded spudder spudders spudding spudding bar spudding bit spuddle spuddy spuds

英语词典包含469781条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。