There was a letter on the mat.

地毯上有一封信。

《柯林斯英汉双解大词典》

The following morning, Peters found a letter on his desk. It read, "Jonathan Peters has worked for our company for 11 years.

第二天早上，彼得斯在他的桌子上看到一封信，上面写道："乔纳森·彼得斯在我们公司干了11年。

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Then, in a letter on his official website, Lau confirmed his marriage to Chu, apologized to his fans and cleared rumors that have been circulating for 24 years.

之后，刘德华终于在自己的官网上证实已与朱丽倩结婚，澄清了流传24年之久的传言，并向粉丝们道歉。

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Yellow or brown areas shaped like the letter V on leaves may be a sign of black rot infection.

VOA: special.2009.03.03

And so this, in fact, when you say your computer stores information as zeros and ones, A you've just typed the capital letter A, that's all that's going on inside.

事实上，当你说电脑以这些0与1进行信息存储时，你已经键入了大写字母，那就是在计算机内部发生的过程。

哈佛公开课 - 计算机科学课程节选

So if your word game doesn't work when the words are 12 letters long, instead of continuing to debug 12 letter hands see if you can make it fail on a three letter hand.

因此如果你的单词游戏当输入单词,有12个字母的时候没法运行了，看看输入三个字母的单词它,能不能正常运行吧。

麻省理工公开课 - 计算机科学及编程导论课程节选

As spokesman for a local campaign, he typed a letter on Wednesday calling for urgent action.

BBC: NEWS | UK | Wales | Crash deaths family 'distraught'

When the user clicks a letter on the keyboard, the app reads the letter to them.

ENGADGET: Sprint and Code Factory team up to deliver free Android accessibility app

In other words, Wright commands respect by his actions, not by a letter on his shirt.

WSJ: David Wright Is Captain Without the 'C'