我们与警方保持着密切联系。

We keep in close touch with the police.

《牛津词典》

他在网上的聊天室与朋友保持联系。

He keeps in touch with his friends in the chat room on the net.

youdao

你与多少老同学保持着联系？

How many of your old school friends do you keep up with?

《牛津词典》

Is the soul in contact of the right sort with the body?

灵魂是否与肉体保持着对应的联系呢

耶鲁公开课 - 死亡课程节选

And he kept track of how many people he gave the vaccines to, and then he kept track of what would happen to those people when a smallpox infection occurred in their community.

他与接种过牛痘的人保持联系,关注当天花在这些人周围肆虐时,他们身上发生了什么

耶鲁公开课 - 生物医学工程探索课程节选