Can you 'pause' when recording a voice-over?

We are wanting to put a voice-over on a Keynote presentation. We would like to be able to 'pause' the recording as we move through the process ... it's at least an hour long presentation (it was originally 3 hours, now being cut down).

Once it's done, we want to export out the whole as a ProRes LT Quicktime movie.

So that's the question, can we pause the audio recording, and have the end result exported Quicktime with a smooth timing (no pauses)?

All ears,

B