Phrases Asking for Clarification

Could you rephrase that?

Meaning

Please say it in a different way.

Translation language

John: The data indicates a significant downward trend.
Alice: I didn't understand that.
John: <b>Could you rephrase that</b> in simpler terms?
Alice: Okay, I understand now. But <b>could you rephrase that</b> again using more layman's terms?