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