我犯了个愚蠢的错误。

I made a stupid mistake.

《柯林斯英汉双解大词典》

她满篇都是愚蠢的错误。

Her work is full of silly mistakes.

《牛津词典》

他们对这场愚蠢的战争感到极其厌倦。

They're getting awfully weary of this silly war.

《柯林斯英汉双解大词典》

And will make mistakes. And therefore, you write your programs so that catastrophes don't occur when those mistakes are made.

就是人是很愚蠢的，会犯错误的，因此，你要这样设计你的程序,以达到当犯错误时避免大事故的目的。

麻省理工公开课 - 计算机科学及编程导论课程节选

So, one question is, "What would cause me to perceive somebody as intelligent or stupid, gay or straight, anxious or level-headed?"

第一个问题是，是什么原由让我认为别人是,聪明的，愚蠢的，同性恋的，异性恋的，紧张的，还是冷静的？”

耶鲁公开课 - 心理学导论课程节选

These are stupid questions, because once you understand what they're asking, the answer is just built in. It follows trivially.

这是些很愚蠢的问题,因为一旦你明白了他们的问题,答案就在其中,一切简单明了

耶鲁公开课 - 死亡课程节选