They are African-and-American kids, and their coming to D.C.

他们都是非裔美籍的孩子，此次来环境保护署总部。

普林斯顿公开课 - 领导能力简介课程节选

We take, um, legislation and regulation, which is sort of how our agencies work in Washington D.C.,

我们还学习立法和规章，学习华盛顿特区的政治部门是如何做这些工作的，

哈佛法学院的课程 - SpeakingMax英语口语达人

So they began to call this A and this B and this C and this D and this E, this F, this G.

他们开始把这叫做A,B和C,这个是D,E,F,G

耶鲁公开课 - 聆听音乐课程节选

I see no Mike Smiths because I'm on page 1 A where the A's simply are so I turn to the B's and the C's S and the D's and so forth and finally I get to the S's but in the worst case I've looked through 1,000 or so pages.

第一页没有找到叫Mike，Smith的人1,因为第一页姓名首字母是,于是我又接着找B，C，D……最终到了字母,但最坏的情况是,我翻了几千页才找到。

哈佛公开课 - 计算机科学课程节选

I personally don't like swings that much and it's the B-/B+ range, so I'd much rather prefer that to a swing from A to C, and that's my reason.

我不喜欢成绩波动很大的,比如B-/B+这个范围,所以我还是喜欢像A到C这样小点的,这就是我的原因

耶鲁公开课 - 博弈论课程节选

So, we start on C and then we go up to D-- a whole step.

我们从C开始,然后上升到D,一个全音级

耶鲁公开课 - 聆听音乐课程节选