Private correspondence; private family matters.

私人信件；私人家庭事务。

youdao

No private correspondence could bear the eye of others.

私人信件是不容许他人过目的。

youdao

This private correspondence, the great majority of which has never previously been made public, was a precious asset for us in making the documentary.

这批绝大部分内容从未于世公布的私人通信是我们制作这部纪录片的一批珍贵财富。

youdao

And there has been some private correspondence from colleagues that, to put it mildly, surprised me.

FORBES: Evolution and Embodied Physiology

The first-year associate then chose to forward this private correspondence with the partner to the entire firm again.

FORBES: After lawyer has public meltdown, is he entitled to privacy?

The university rightly asserted that much of my private correspondence is just that and not subject to release.

WSJ: Climate Contrarians Ignore Overwhelming Evidence �� Letters to the Editor