字母：拉丁字母表中的任何一个字母。
'B' is the second letter of the alphabet.
b是字母表的第二个字母。
I am the ninth letter of the alphabet.
我是字母表里第九个。
Each letter of the alphabet triggers a rocket headed for space (see Figure 3).
字母表中的每个字母都会触发火箭向前移动(参见图3)。
All right so roughly into the middle over too fast) roughly into the middle and at this point you realize what letter of the alphabet are you on?
好，先大致翻到中间,呵呵，你翻得也太快了些,在这一页,你看到了哪个字母？
计算机科学课程节选 : 哈佛公开课
Because what you don't see in this file is any code a that actually says put a letter of the alphabet at the top left hand corner of the screen and then put the next character to the right in other words, I'm taking for granted at this moment in time that my computer knows how to print something to the screen.
就是这些你在本文件中看不到的一些代码,实现了将首字母,放在屏幕的左上角,然后把其他字母加在其右边，我想当然地认为,我的电脑知道如何打印相应信息到屏幕上。
计算机科学课程节选 : 哈佛公开课
Why? Well, out presumably 'cause it's output, a because it's the first letter of the alphabet.
为什么？也许是因为out代表是输出吧，而a则是字母表的第一个吧。
计算机科学课程节选 : 哈佛公开课
Abolish every government agency that begins with a letter of the alphabet.
FORBES: How to Get the U.S. Back to Full Employment in 30 Days
His 'Invocation' hovered around a single letter of the alphabet.
Even a decade or so ago, most phones had dull gray screens, clamshell designs or tiny keypads that made you hit a button over and over to text one letter of the alphabet.