about face
完全改變方向或主意
正式/口語·形容突然改變決定或態度
英文釋義
to completely change one's opinion, attitude, or direction
例句
The government did an about face on the tax policy after public outcry.
典故來源
源自軍事口令,士兵向后轉的動作,引申為立場或方向的徹底轉變。