I always want to--modern football helmets which are monstrous-- I'm so old we used to play with leather ones without a face mask.

现代美式橄榄球的面具就跟怪兽一样的,我老了,我们小时候打球都是皮质头盔而且没有面具的

耶鲁公开课 - 古希腊历史简介课程节选

I'll play a melody without vibrato and with vibrato so you can see the difference.

我来演奏一段旋律,分有揉弦和没有揉弦两种表现,这样你们就能听出区别

耶鲁公开课 - 聆听音乐课程节选

While we're here, our third notation for strategy, I'm going to use little "s" without an "i," no subscripts: little "s" without an "i," to mean a particular play of the game.

说到这,我们来定义第三个标记符,我们用不带下标的小写s,来表示某一次博弈

耶鲁公开课 - 博弈论课程节选