Phrases Asking for Clarification

This isn't entirely clear to me.

B2

Meaning

Expressing partial lack of understanding.

Example sentences

John: The revised contract has a few changes.

Alice: This isn't entirely clear to me. Could you go over the key differences?

John: Certainly. The main change is to the payment schedule.

Alice: Okay. However, this isn't entirely clear to me. How does this affect the overall budget?