“大错”用英语怎么说

心理测试能够使组织机构避免犯下损失惨重的大错。Psychometric tests can save organizations from grim and costly mistakes.亚历克斯，你真是大错特错，你对局势的判断根本不对。You couldn't be more mistaken, Alex. You've utterly misread the situation.如果你认为我对剩下的很满意，那你...