volte-face

noun

1. （意见或计划的）大转变，完全转变
   a complete change of opinion or plan
   1. This represents a volte-face in government thinking.
      这代表着政府观点的彻底转变。

1. N-COUNT （观点或决定的）大转变，彻底转变，180度大转弯
   If you say that someone's behaviour is a volte-face, you mean that they have changed their opinion or decision completely, so that it is the opposite of what it was before.
   1. The day's events were a remarkable volte-face.
      当日发生的事件是一次惊人的大转折。

1. The day's events were a remarkable volte-face.
   当日发生的事件是一次惊人的大转折。
2. "You say I did a volte-face, but we are going back many years now," he said.
   “你会说我是两面派，但我们早已走上正轨，”他说。
3. Herlatest speech represents a complete volte-face in governmentthinking.
   她最近的讲话表明政府观点完全改变了。
4. Some observers have blamed the volte-face on lobbying inside the senior echelons of the European Central Bank.
   一些观察员认为，欧洲央行（ecb）高层内部的游说，是这种态度转变的原因。
5. She seems to have compromised her earlier views somewhat by going along with her party's volte-face on defence.
   随着她所在的党对国防政策的大转变，她好像已经就她起初的观点作了妥协。
6. Optimal reentry volte-face trajectory and control for hypersonic spacecraft
   高超声速航天器最优再入大回转轨迹与控制
7. Spacecraft control laws for volte-face reentry motion are explored.
   探讨了高超声速大回转再入的控制方法。

noun

1. a major change in attitude or principle or point of view
   1. an about-face on foreign policy

   Synonym:    about-facereversalpolicy change