to continue to communicate with someone.
Her family have kept in touch with me since her death. (often + with)
Do stay in touch after you've moved, won't you?
英语词组固定搭配大全包含18674条英汉双解词组,基本涵盖了全部常用英文词组、短语的翻译及用法,是英语学习的有利工具。