'Accidents will happen', as the saying goes.

常言道：“意外事，总难免。”

《牛津词典》

As the saying goes — it's no use crying over spilt milk.

常言道：覆水难收，后悔也于事无补。

《牛津词典》

When would they be hired again? Perhaps, as the saying goes, when pigs fly.

他们什么时候会被重新雇用？也许正像俗话说的，等到猴年马月吧。

《柯林斯英汉双解大词典》

Thousands of young people, who had previously thought of themselves as part of an isolated minority, experienced the euphoric sense of discovering that they are, as the saying goes, what's happening."

VOA: special.2009.08.10

Obviously, it goes without saying that today the assessment of Milton as some kind of imminent social threat or some sort of social force in terms of the radical nature of political power - that has taken a sharp turn.

显然--这是不言而喻的--现在，这一种基于弥尔顿,政治力量的激进性而把他看做是,危险的社会威胁或社会力量的观点,已经有了180度大转弯。

耶鲁公开课 - 弥尔顿课程节选

And sometimes, as the old saying goes, it is the thought that counts.

VOA: special.2010.02.08

As the saying goes: Be kind, for everyone you meet is fighting a hard battle.

FORBES: The Problem with High Expectations

As the saying goes, the first step toward recovery is to acknowledge the problem.

CNN: GOP off to a bad start for 2016

And as the saying goes, there is no such thing as a free lunch.

WHITEHOUSE: Town Hall on America��s Fiscal Future