They could not be more wrong.

他们错了。

youdao

Dear diary, I couldn't have been more wrong.

亲爱的日记，我大错特错了。

youdao

You think "m2 g" — you couldn't be more wrong.

你说m 2g，这不能再错了。

youdao

He said it was wrong to raise more tax money than the government needed.

VOA: special.2010.05.20

Is that of course--and why is it so clear ? the lawyer got to be more wrong?

为什么我们确定,律师犯了更多错？

耶鲁公开课 - 死亡课程节选

For some reason, that still just seems more wrong.

出于某种原因，我觉得这样似乎错上加错。

耶鲁公开课 - 公正课程节选

As usual, they all have it wrong, although some are more wrong than others.

FORBES: Fed Is Killing The Recovery With Quantitative Easing

Third, there is likely trend-following behavior among the gurus, which leads to more wrong forecasts than right forecasts.

FORBES: It's Official! Gurus Can't Accurately Predict Markets

They retorted that he could not be more wrong (though Ms Rice was fractionally less dismissive this week).

ECONOMIST: Let��s be friends