German phrase
Meinen Sie, dass ~?
Meaning
Do you think ___?
When to use it
It asks for your opinion. It is a polite way to seek advice.
Example dialogue
Meinen Sie, dass wir ihn einladen sollten?
Do you think we should invite him?
Ich denke schon; seine Meinung wäre wichtig.
I think so; his opinion would be important.