名词向后转，大转弯
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1. 向后转,大转弯：backing store [计]存储器回填,将存储备份 | volte-face 向后转,大转弯 | mean effective power 均方根[平均有效]功率
2. 向后转：volte 回 | volte-face 向后转 | voltmeter 伏特计
1. （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.
e.g. 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。
noun
1. volte-face在线翻译
1. a major change in attitude or principle or point of view
e.g. an about-face on foreign policy
Synonym: about-face reversal policy change