about-face

汉语翻译

n. 向后转, 大改变
vi. 向后转, 作重大改变

词型变化：

动词过去式:about-faced 过去分词:about-faced 现在分词:about-facing 第三人称单数:about-faces 

英语解释：

名词 about-face:

1. act of pivoting 180 degrees, especially in a military formation
   同义词：about turn
2. a major change in attitude or principle or point of view
   同义词：volte-face, reversal, policy change

动词 about-face:

1. turn, usually 180 degrees
2. change one's mind and assume the opposite viewpoint