一部分 yībùfen HSK2 a part of Origin Definitions Defs Strokes Stroke Words Sentences Sents yībùfen a part of 一 yī numeral one one; the number 1; single; alone部分 bùfen noun part part; section; portion; pieceyībùfen partially 一 yī numeral one one; the number 1; single; alone部分 bùfen adverb partly partially; in part