a variety of situations and experiences that are sometimes good and sometimes bad 盛衰；沉浮 The company has had its share of ups and downs, but it seems to be doing well now. 公司经历了兴衰起伏，但现在似乎经营得很好。
Synonyms and related words
Involving both successes and failures: knife-edge, bumpy, chequered...
Synonyms and related words
General words for situations and circumstances: situation, circumstance, conditions...