这真是个大乌龙英语怎么说

"这真是个大乌龙"这句话可以用"This is a huge mistake"来表达。"乌龙"一词来源于中文，原意为黑色的龙，比喻错误或误解。例句：

I'm sorry, I think I've made a huge mistake. 我很抱歉，我想我犯了一个大错误。

I'm afraid there's been a misunderstanding. 恐怕这是个误会。

I'm sorry, I didn't mean to offend you. 抱歉，我并不是故意冒犯你的。

希望这些例句能帮助您。