I heard the voice of harpers harping with their harps: and no man could learn that song.

我听到竖琴师用他们的竖琴反复演奏着：，…,没人能学会那首歌。

耶鲁公开课 - 弥尔顿课程节选

So this is an experiment of using an online distance product to enrich what was from a content standpoint that our students recapped.

因此，这个实验,用网上远程产品充实了,同学们反复阐述的,内容观点。

麻省理工公开课 - 媒体、教育、市场课程节选

Mine is to demonstrate over and over how little mathematics you need to get the job done.

我的方法就是,反复演算,用最少的数学来解决问题

耶鲁公开课 - 基础物理课程节选