So, I've been asked that if a question is not very clear, I should repeat it so that people listening to it later will know what the question was.

工作人员要求我,如果某个问题听得不清楚,我就需要重复一遍,好让今后观看视频的人弄清楚问题是什么

耶鲁公开课 - 基础物理课程节选

In fact, the famous frontispiece of the book, which is reproduced in your edition, although it is not altogether very clear.

事实上，这本书的卷首非常有名，这在你们的版本里也有复制，虽然不是那么清楚。

耶鲁公开课 - 政治哲学导论课程节选