Ministry of Education 《Revised Mandarin Chinese Dictionary》

Word
Bopomofo ㄩㄣˋ ㄒㄧㄥˊ
Hanyu Pinyin yùn xíng
Interpretation
循一定軌跡周而復始的轉動、前進。《易經.繫辭上》:「日月運行,一寒一暑。」

︿