So how do you keep in touch with each other?

那么你们是怎么保持联系的呢？

And do you keep in touch with him?

你和他保持联系吗？

I do keep in touch with my friends.

我会和我的朋友保持联系。

Do you keep in touch with your former classmates?

你和以前的同学有联系吗？

I still keep in touch with my former boss.

我仍然和以前的老板保持联系。

It's the way they keep in touch with their friends.

这是他们与朋友保持联系的方式。

They allow people to keep in touch with each other anytime, anywhere.

它们使人可以彼此之间随时随地保持联系。

And I could keep in touch with the office by email, or by phone.

我可以通过邮件和电话与办公室保持联系。

Though I rarely see Peter, we keep in touch with each other by e-mail.

虽然我很少见到彼得，但我们仍借电子邮件保持联络。

To keep in touch with someone is to contact them and share your news regularly.

跟某人保持联系是跟他们联络，并且分享你的近况。