a wake-up call 敲响了警钟
Martha’s bad test results were a wake-up call for her to work harder before her final exams.这次糟糕的测试成绩给玛莎敲响了警钟，为了期末考试，她必须更加努力。
The store’s poor sales results are a wake-up call for the business to move with times and sell more fashionable clothes.商店糟糕的销售额提醒我们现在要跟随时代，销售更多时尚潮流的服装。
The recent extreme weather is a wake-up call for us all to do something about climate change.较近的极端天气警醒我们要为气候危机做出行动。

you do you  你行你素Look, we can’t agree on this – you do you and we’ll talk about this again later.看，我们没有达成共识---你行你素，我们之后再讨论这个吧。

I told my girlfriend to do more exercise but she wouldn’t listen, so I told her ‘you do you’, I’m off for a run!我都告诉我女朋友多锻炼了，但她不听，所以我就跟她讲说“你行你素”，我出去跑步了！
I like the way you do you - you stick to what you think is right and are not influenced by other people’s comments.我喜欢“你行你素”的这种方式，坚持认为自己的想法是对的，不因他人的言论而受到影响。

reinvent the wheel 浪费时间做无用功Don't reinvent the wheel; we already have a plan that seems to work well.不要浪费时间做无用功了；我们已经有一个看起来很有效的计划了。
He spent days working out the new course syllabus when we had planned it already — he's just reinvented the wheel!他花费了好几天的时间来制定新的课程大纲，可是我们之前就已经计划好了，他只是在浪费时间做无用功！
Nancy's new idea is just the same as the old one — she's just reinvented the wheel!南茜的新主意和之前的想法一样，她只是在浪费时间做无用功罢了！