I use Star Festival CD-ROM as part of a unit on Japan and places in the world.

我用“七夕节“光盘作为了解,日本和世界各地的媒介。

麻省理工公开课 - 媒体、教育、市场课程节选

We have the convention of music of writing this symbol indicating the beat-carrying unit of four so I'm writing a four underneath each of these.

我们有一个约定俗成的书写格式,来表示四拍一单元,所以我在每行这里的下面写上一个四

耶鲁公开课 - 聆听音乐课程节选