These threats also present an unprecedented opportunity for our country.

If so, they said, the testing would offer an unprecedented opportunity to attack a devastating and common cancer.

The urgency of the women's movement created unprecedented opportunities for women.

But we know that this is a time of unprecedented opportunity.

In this era of unprecedented opportunity, more women than ever before have entered the work force.

As a scholar, you will have an unprecedented opportunity to do research that may one day be of great benefit to your people.

We hope to conclude an agreement soon to build on what promises to be an unprecedented opportunity.

Your wife has given you an unprecedented opportunity to adapt to this world.

I hope people take advantage of this unprecedented opportunity to participate in the process.

But to my mind, that would be a waste of an unprecedented scientific opportunity.