turn·a·bout /ˈtɜːnəbaʊt $ ˈtɜːrn-/ noun 1 [countableC usually singular] British EnglishBrECHANGE/BECOME DIFFERENT a complete change in someone’s opinions, ideas, or methods 〔观点、思想或方法的〕彻底改变,转变 an extraordinarily rapid turnabout in attitudes 态度上异常迅速的改变
2. turnabout is fair play American EnglishAmECAN used to say that because someone else has done something to you, you can do it to them too 一人一遭,天公地道;以其人之道还治其人之身乃是公道