时进时退，涨落起伏，摇摆不定，时而顺境时而逆境

1. now advancing and now retreating, ebb and flow, seesawing, taking alternately favorable and unfavorable turns

nouns which may take the genitive case particle 'no' noun or participle which takes the aux. verb suru noun (common) (futsuumeishi) intransitive verb yojijukugo