completely mistaken

"You're wrong, quite wrong!" Henry cried out, suddenly excited.

“你错了，大错特错！”亨利突然激动地大喊道。

Among the 27 Cases with hypotonic cerebropathy, 16 cases treated with hypertonic solution of sodium chloride were completely cured, the other 11 patients whose sodium intake had been continuously restricted all died. 9 of them were mistaken as hepatic-cerebropathy.

在并发低渗性脑病的27例中，16例给予补钠治疗，低渗性脑病均被治愈，对照的11例继续限钠者均死亡，其中9例被误诊为肝性脑病。

If you think I'm going to help you again, you're sadly (= completely) mistaken.

你要是以为我还会再帮助你，那你就大错特错了。

You are completely mistaken about Jane.

你对简的看法完全错了。

In my submission the government is completely mistaken.

我认为政府完全做错了。

You couldn't be more mistaken, Alex. You've utterly misread the situation.

亚历克斯，你真是大错特错，你对局势的判断根本不对。

If you think I'm going to help you again, you're sadly (= completely) mistaken.

你要是以为我还会再帮助你，那你就大错特错了。

O how mistaken you are!

哎呀，你可大错特错了！