don't be a stranger
US /doʊnt bi ə ˈstreɪn.dʒər/
UK /doʊnt bi ə ˈstreɪn.dʒər/

1.
别做陌生人, 保持联系
used to tell someone you want them to stay in contact with you
:
•
It was great seeing you! Don't be a stranger.
很高兴见到你!别做陌生人。
•
We should catch up again soon, so don't be a stranger!
我们应该很快再聚,所以别做陌生人!