adv.犹豫地
His constant vacillation made him an unfit administrator.
他经常优柔寡断,这使他不适合当行政官员.
Vacillation is the cause of his failure.
优柔寡断是他失败的原因.
He accused President Carter of vacillation and retreat.
他指责卡特总统的动摇和退缩。