"What makes her a great teacher?" "She makes me learn letters and she's nice to me."

VOA: special.2010.04.30

The actual fluctuation of your voice isn't something that's taught, but what they teach you is how to pronounce the letters properly, and rules that go along with the letters.

你声音的起伏不是别人教的,但是他们教会你的是,字母的正确发音，以及这些诵读这些字母的规则。

普林斯顿公开课 - 人性课程节选

But we know already from week zero that computers ultimately represent all information with numbers, and if they want to represent letters inside memory, well what do they do or what do they use?

但是自从上周我们已经知道,计算机最终是用数字来表示所有的,信息，如果它们要描绘,在内存中的字母，它们该怎么做，用什么方式呢？

哈佛公开课 - 计算机科学课程节选

His letters from this time on are often full of talk about what he must do to support his family and to continue the repairs to his house.

VOA: special.2010.01.03

Uriah Parmelee had an inheritance; at what level he exactly understood it I can't necessarily know, although his letters are extraordinarily rich.

乌利亚遗留下了一些东西,他的理解到达了一定层次,而我没有,尽管他的书信内容很丰富

耶鲁公开课 - 美国内战与重建课程节选

The letters of this code tell what qualities the bacterium contains.

VOA: special.2010.07.20

And what happens if you want to move back and forth between a bunch of different letters?

如果你想阅读,不同的书信呢？

耶鲁公开课 - 新约课程节选

She sent letters asking the children to donate what they could.

VOA: special.2010.02.05

It doesn't depend on our going to the archive, finding out what the author said in his letters about it, finding out what he told his friends, or what he told the newspapers. It doesn't involve any of that.

而不是我们是否要把它保存起来，在作者的字里行间琢磨里面的意思，或者发现作者对他的朋友是怎么说的，对报纸是怎么说的，这些都没有。

耶鲁公开课 - 文学理论导论课程节选

The number that you choose to rotate your letters by is what we call in cryptography, a key.

你选择的旋转字母的数量,就是所谓的加密学，一个密钥。

哈佛公开课 - 计算机科学课程节选