He always asks after you in his letters.

他在信中总要问候你。

《牛津词典》

He never referred to his sisters in his letters.

他在信里从未提到过他的姊妹。

youdao

How does this relate to these different issues that come up in his letters?

这与他书信中出现的其他问题，有何关系？

youdao

Brown wrote letters to his supporters in the North.

VOA: special.2009.06.18

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

John Milton will remain unique in English letters for the degree of thought that he gave to the shape of his literary career, or actually to the notion of a career at all.

约翰弥尔顿在英语文学方面的影响是十分独特的,因为他深刻的思想塑造了他的文学事业，或者说，塑造了他对事业的看法。

耶鲁公开课 - 弥尔顿课程节选

In his letters, Welsh alleges that earlier congressional investigations were subverted with false and misleading information.

CENTERFORSECURITYPOLICY: Center For Security Policy

Mr Buffett has discussed derivatives in exhaustive detail in his letters to shareholders and in other public statements.

ECONOMIST: Letters

He was an erudite wit at the dinner table and, as the reader now sees, in his letters.

ECONOMIST: Isaiah Berlin