you never know

US /juː ˈnev.ər noʊ/
UK /juː ˈnev.ər noʊ/
"you never know" picture
1.

nunca se sabe, vai que

used to say that something unexpected might happen, so you should not give up hope or assume something will not happen

:
It might rain later, you never know.
Pode chover mais tarde, nunca se sabe.
He might still show up, you never know.
Ele ainda pode aparecer, nunca se sabe.