意思是：变化无常；
句子实例：
I wish you wouldn't chop and change your mind like this; either buy a new motorcycle or don't, but leave me in peace.
我希望你不要这样朝秦暮楚; 要不就买辆新摩托车，要不就不买，让我清静一点吧。
If you chop and change jobs like this, you'll never get experience.
如果你像这样老是变换工作，你将永远得不到经验。
