“U-turn”是可数名词，本意是“掉头、转弯”，可以引申为“改变”。开车时“掉头”的英文就是 make a U-turn，所以这个词一点都不难记。U-turn 的引申义“改变”相比 change 更强调改变的彻底性，因此是个非常形象、准确的单词。 英英释义：a complete change of ideas, plans etc
例句:
① 在过去两年里，这个地方政府的政策一点都不连贯，总会有各种改变，就可以说：
In the past two years, the local government has been utterly inconsistent with its policies, making various U-turns.
② 如果你想要成为一名受人尊重的领导人，你应该避免过多的决策大转弯，我们可以说：
If you want to be a respected leader, you had better avoid making too many U-turns when making decisions.
③ 不少人批评这个欧洲政府在移民政策问题上出尔反尔， 可以这么写：
Many critics accuse the European government of doing a sudden U-turn on its promise to take in more immigrants.
④《经济学人》在说到变化时常会用 U-turn，比如下面这两句：
1) Earlier this year, AMD forced Intel to make a U-turn in its 64-bit-chip strategy.
2) A year later, following the collapse of Lehman Brothers, the markets made a U- turn.
1）翻译：
他的观点发生了 180° 大转弯，决定和前妻复婚。
He has made a U-turn and decided to remarry his divorced wife.
He has made a U-turn, deciding to remarry his ex-wife.
2）造句
例子： If you want to make a long -term career planning , you had better avoid making too many U-turns when selecting jobs
场景 ：如果你想做长期的职业规划，就最好避免选择工作时做过多的大的改变
