fluctuated [ˈflʌktjueitid]

以下由轻松背单词网站提供

附加级

波动，涨落，起伏( fluctuate的过去式和过去分词 )

All year she has fluctuated between optimism and despair. 全年当中她时而乐观，时而消沉。
He fluctuated between hope and despair. 他时而充满希望时而失望。