我今天犯了个错误。

I made a mistake today.

youdao

我今天犯了一个错误！

I made a mistake today!

youdao

好，基本上来说，今天我有一点麻烦，我犯了一个不小的错误，我带了另一个女孩去吃饭。

Well, basically today I have a bit of problem. I made a big mistake and I took another girl out to a resturant.

youdao

今天，我做数学作业的时候犯了一个错误。

Today, I made a mistake when I was doing my math homework.

youdao

今天早上，我犯了一个愚蠢的错误。

In the morning, I made a stupid mistake.

youdao

今天早上，我犯了一个愚蠢的错误。

In the morning, I made a stupid mistake.

youdao