keep in touch
US /kiːp ɪn tʌtʃ/
UK /kiːp ɪn tʌtʃ/

1.
保持联系, 保持联络
to maintain communication with someone
:
•
Let's promise to keep in touch after graduation.
我们约定毕业后保持联系。
•
It's important to keep in touch with old friends.
与老朋友保持联系很重要。
保持联系, 保持联络
to maintain communication with someone