To do a U-turn 来一个180度大转弯
今日短语
在驾驶时，U-turn 就是来一个180度的大转弯或调头。在现实生活中，这个短语的意思是形容对某事的态度或观点来了一个180度的大转弯，彻底改变。
例句
I’m afraid your father has done a U-turn and he won’t let you take his car at the weekend after all.
The university did a U-turn and decided not to expel the student.
请注意
另一个常用成语“at a crossroads 在交叉路口或十字路口”可以用来形容紧要关头，需要做出关键决定的时刻。
例句
You’re at a crossroads now. You need to decide what you want to study. Arts or sciences?
Their marriage was at a crossroads. They could either try again to make it work or take the decision to split up.
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