音标：['væsileit]
vi. 游移不定, 踌躇, 犹豫, 摇摆
在线英汉词典

vacillate的短语、例句：

vacillate v[I, Ipr] ~ (between sth and sth) (fml usu derog 文, 通常作贬义) keep changing one´s mind; move backwards and forwards between two emotions （思想）动摇不定; 犹豫; （在两种情绪之间）变化不定
She vacillated between hope and fear.她时而抱有希望, 时而心存恐惧. Cf 参看 oscillate.