Motivation and presentation not explained in the paper
I agree with @gnometorule.  It looks like the reviewer wrote a sloppy comment.  I imagine the reviewer meant, "The presentation needs improvement, and the motivation should be explained better."  Presentation means how you present your ideas.  I suppose the reviewer felt that the ideas could be presented more clearly.  Motivation makes the reader care about your contribution.

Hopefully the reviewer also made some specific comments that will guide your revision process.