单词	spectrohelioscope
释义	spectrohelioscope noun spec·​tro·​he·​lio·​scope ˌspek-trō-ˈhē-lē-ə-ˌskōp  1 : spectroheliograph 2 : an instrument similar to a spectroheliograph used for visual as distinguished from photographic observations Word History Etymology International Scientific Vocabulary First Known Use 1906, in the meaning defined at sense 1
随便看	prerequisite prerequisites preresolve preretirement preretirements prereturn prereview prereviewed prereviewing prereviews prerevisionist prerevisionists prerevolution prerevolutionary prerinse prerinsed prerinses prerinsing preriot preripen prerock seams seamsets seamster seamstering

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