How can you go from a finite list of symbols to an infinite number of sentences?

你如何使有限的符号,变成无限的句子

耶鲁公开课 - 心理学导论课程节选

This is, I think, how we need to understand the various occult symbols in another great poem from this phase in his career, a little bit further on, "The Second Coming," on page 111.

我想这就是，我们去理解叶芝同时期另一首,伟大诗歌中神秘意象的方法，以更深刻地理解它，《第二次降临》在111页。

耶鲁公开课 - 现代诗歌课程节选

We talk in terms of high pitch and low pitch although we'll fine tune that next time, and then we have this idea of duration or time, which we tend to write out in symbols that move from your left to right.

我们是从高低方面来谈论音高,即使我们将于下次讲解曲调的问题,我们已经有了音符时值或时间的概念,我们倾向于用符号来表示,时间是从你的左边向右边移动的

耶鲁公开课 - 聆听音乐课程节选

Well, it's a prefix most of the symbols in this function with just an asterisk, with a * from the keyboard so Shift-8.

好的，在这个函数中它是一个前缀符号,就是一个星号，在键盘中用Shift-8输入。

哈佛公开课 - 计算机科学课程节选