O'Brien glanced back down at the tricorder, hoping for some unexpected breakthrough.

Studies show the change can be made with existing technology at reasonable cost, but this would require an unexpected breakthrough in the talks.

The researchers have had some unexpected breakthroughs in the United States as well.

They continued to play as a middling side there until an unexpected breakthrough to the Bundesliga in 1983.

But if the talks scheduled to get under way earlier this week were to result in an unexpected breakthrough, they would pose fresh challenges for Walesa.

Along came an unexpected scientific breakthrough.

On the same day, the Project Amy staff had a sudden, unexpected breakthrough in their understanding of Amy's dreams.

This could be one of the most important-and unexpected breakthroughs SOTS had ever made.

But he made an unexpected breakthrough when a Colombo associate introduced him to a member of the Bonanno family.

Barring an unexpected breakthrough in the negotiations, all the concerts by the festival orchestra have been canceled.