never let a day/week/year etc go by without doing somethingREGULARused to say that someone does a particular thing very regularly 没有一天/一个星期/一年等不做某事 They never seem to let a year go by without introducing a new version of their software. 他们好像每年都会推出他们这种软件的新版本。
→ never let a day/week/year etc go by without doing something at let1(10)