U-turn：a complete change of ideas, plans etc

可數(shù)名詞“掉頭”，“轉(zhuǎn)彎”，可引申為“改變”，開車時調(diào)頭make a u-turn

例句：In the past two years, the local government has been utterly inconsistent with its policies, making various U-turns.

例句：If you want to be a respected leader, you had better avoid making too many U-turns when making decisions.

造句：If you make a decision after a long-time struggling，just don't make any u-turns when you start to do it.

翻譯：He has made a U-turn and decided to remarry his ex-wife.

造句：Her attitude has made a U-turn after she knew the real status of that old? man.