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 like listening to you talk about when I was a child, know your family, know your background.

我喜欢听你聊聊小时候的事，知道了你的家庭，了解了你的背景。

youdao

Also, don't presume that the hiring manager or department manager reviewing your qualifications will know your background.

再者，不要以为稽核你升职资格的招聘经理或部门主管会了解你的背景。

youdao

So I don't know your mathematical background, but the textbook has an appendix, which is a reasonable measure of how much math you should know.

我不太清楚你们的数学功底,但教材上有附录,它能清楚地告诉你,你应该掌握多少数学

耶鲁公开课 - 基础物理课程节选