n.1.搖擺,波動,振蕩。2.猶豫不決,躊躇,優柔寡斷。climatic vacillation: 氣候波動vacillation cycle: 游移周期vacillation phenomena: 游移現象vacillation is the cause of his failure: 優柔寡斷是他失敗的原因vacillatingly: 猶豫地下載手機詞典可隨時隨地查詞查翻譯