vail1[veil]vt.1.■使下降,使低落,使低垂:He vailed his head rapidly.他迅速把头低下。2.■[古语]脱下(帽子等,表示敬意)vi.1.■降低,低垂2.■脱帽(致敬) vail2[veil]1.■[古语]vi., vt.1.■有用于,有利于n.1.■赏钱,小费 vail3[veil]n., vt.1.■[废语] = veil