I'm sorry madam, this is not our brochure. I'm afraid you've made a mistake.

抱歉夫人，这不是我们的宣传册，恐怕你弄错了。

youdao

I am terribly sorry, madam.

我非常抱歉，夫人。

youdao

Sorry, madam, I have underestimated you as I didn't know your background.

对不起，女士，我不了解您的背景，因此低估了您。

youdao

"I'm sorry, madam, " says the officer.

BBC: NEWS | UK | UK Politics | David Davis speech in full