我犯了个愚蠢的错误。

I made a stupid mistake.

《柯林斯英汉双解大词典》

我写了这首愚蠢的爱情歌曲。

I wrote this sappy love song.

《柯林斯英汉双解大词典》

我自觉是个愚蠢的失败者。

I felt foolish and a failure.

《牛津词典》

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

Here's my favorite example of stupid facts I was forced to learn when I was younger--state capitals, right?

下面是我最喜欢的一个关于愚蠢的事实的例子,在我年轻时，我被迫去记忆州首府？

耶鲁公开课 - 死亡课程节选

So we keep track of the types of questions that come up, unless I said something stupid in class or been confusing, certainly.

所以我们对出现的各种各样的问题保持联系，除非我在课程上说了一些愚蠢的,或令人困惑的话。

哈佛公开课 - 计算机科学课程节选