西弗 xīfú sievert Origin Definitions Defs Strokes Stroke Words Sentences Sents 西弗吉尼亚 Xī Fújíníyà West Virginia West Virginia, US state西西弗斯 Xīxīfúsī Sisyphus Sisyphus (Greek mythology)路西弗 Lùxīfú Lucifer Lucifer (Satan's name before his fall in Jewish and Christian mythology)