- 我认为他生来就愚笨。
I think he was born stupid.
- 你能劝她放弃她那些愚蠢的计划吗？
Can you persuade her out of her foolish plans?
- 昨天发生的事故应该归咎于他的愚笨。
The accident happened yesterday owed to his foolishness.
- 她自负而愚蠢，然而人们喜欢她。
She is vain and foolish, and yet people like her.
- 他的愚蠢行为导致了他最后的失败。
His foolish behavior led to his eventual failure.
- 因为我的愚蠢，我不得不站起来听他的批评。
I have to stand up listening to his criticism of my foolishness.
- 为这样的小事辞职未免愚蠢而轻率。
It would be foolish and impetuous to resign over such a trivial matter.
- 当我回答不出老师的提问时，我觉得自己很愚蠢。
I felt rather foolish when I couldn't answer the teacher's question.