Made a foolish mistake in chopping down a big tree.

砍倒一棵大树是个愚蠢的错误。

A very basic or foolish mistake.

低级或愚蠢的错误。

You have made a foolish mistake.

你犯了一个愚蠢的错误。

Never make such a foolish mistake again.

决不要再犯这样愚蠢的错误了?。

One foolish mistake involved him in a good deal of trouble.

一个愚蠢的错误使他陷入一大堆麻烦。

Foolish men mistake transitory semblance for eternal fact.

愚蠢的人误以为暂时的表象是永恒的事实。

It was indeed foolish judgement. I made a really terrible mistake.

那绝对是一个愚蠢的判断。我真的犯了很大的错。