首日封 shǒurìfēng first-day cover Definitions Defs Origin Strokes Stroke Words Sentences Sents 首 shǒu adjective first (bound form) first; highest; earliest日 rì nounadverb day a 24-hour period; the time it takes for the earth to rotate once on its axis封 fēng noun envelope (bound form) envelope; paper wrapping or cover for a package
