由于粗心他犯了一个严重的错误。

He fell into a serious error by carelessness.

youdao

我恐怕他犯了一个严重的错误。

I'm afraid he's made a bad mistake.

youdao

他犯了一个严重的错误，可是他拒不承认。

He made a terrible mistake but he refused to admit it.

youdao

他犯了一个严重的错误，可是他拒不承认。

He made a terrible mistake, but he refused to admit it.

youdao

他犯了一个严重的错误。

He made a mistake heavily.

youdao

他犯了一个严重的错误。

He has made a serious mistake.

youdao

当他指控我说谎时，他犯了一个严重的错误。

It was a grave mistake when he accused me of lying.

youdao

他意识到自己犯了一个严重的错误。

He realized that he had made a big mistake.

youdao

他承认他犯了“一个严重的错误”，但他并没有承认这是他有意为之。

He has admitted to "grave mistakes", but said he did not commit them knowingly.

youdao

只有那时他才意识到犯了一个严重的错误。

Only then did he realized that he had made a severe mistake.

youdao

只有那时他才意识到犯了一个严重的错误。

Only then did he realized that he had made a severe mistake.

youdao