Complex sentence: The device was first used by the Asgard to trap the replicators in a time buble where time was 10 4 slower than outside the bubble to give them time to figure out what they could do about the replicator threat.
Split into simpler sentences: The device was first used by the Asgard to trap the replicators in a time buble where time was 10 4 slower than outside the time bubble. This allowed the Asgard time to figure out what they could do about the replicator threat.