他不知道该做什么，所以他向他的老师寻求意见。

He didn't know what to do with it, so he sought advice for his teacher.

youdao

令老师烦恼的是，问起谁打破了窗户时，在场的人没有一个回答，所以他不知道该责怪谁。

What troubled the teacher was that no one present made an answer when asked who had broken the window, so he didn't know who was to blame.

youdao

我不知道还可以叫老师将一本书放在保留书目里。

I didn't know that I could ask a professor to put a book on reserve.

youdao

Just so you know." Unbeknownst to the teachers, the actual test which was given to those students was a regular off-the-shelf IQ test.

只有你们知道就好“老师们不知道的是，对学生进行的测试,只是普通的现成的智商测试。

哈佛公开课 - 幸福课课程节选

If you don't know that somebody should've taught you that in the 6th Grade or the 4th Grade or the 1st Grade or somewhere.

如果你不知道,那你们肯定是忘了,在六年级或四年级的时候老师肯定讲过,或者一年级,无所谓具体什么时候

耶鲁公开课 - 美国内战与重建课程节选

Also unbeknownst to the teachers was these students names, who were deemed "the fast spurters"/"high potential students", were literally randomly picked out from a hat.

老师们也不知道这些所谓的，“快速迸发者“或者潜力巨大的学生，都是从一个帽子抓阄抓出来的。

哈佛公开课 - 幸福课课程节选