肺部有了问题就不该抽烟，这是不言而喻的。

It goes without saying that if someone has lung problems they should not smoke.

《柯林斯英汉双解大词典》

人们常常会先考虑自己，这是不言而喻的事。

It's a truism that people think of themselves first.

youdao

这是不言而喻的，国会的一项特别法案是不会来得很便宜的。

That was understood. A special Act of Congress does not come cheap.

youdao

And he acknowledges here finally that the ideal of virginity is an ideal for which women are typically praised - and of course this goes without saying.

最后他也承认,关于妇女通常被赞美的童贞理想只是空想,当然这是不言而喻的。

耶鲁公开课 - 弥尔顿课程节选

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