Seventy-nine is, of course, the letter O so we're almost there.

当然，79代表字符。

哈佛公开课 - 计算机科学课程节选

I once counted the number of times he used the word the letter--O--in that poem, and I quit counting.

我曾经数过他到底在诗里用了多少个"啊",最后我放弃了

耶鲁公开课 - 美国内战与重建课程节选