"I do not believe where you have the kind of misconduct that we've seen in this case it's a once-in-a-lifetime experience."

"This may be a once-in-a-lifetime experience, so I want them to have their families around."

This could be a once-in-a-lifetime experience for a curator', don't you think?

"As card members tell us about their individual interests, we will shape once-in-a-lifetime experiences to match."

Reach speeds only legal on the race track in an once-in-a-lifetime experience.

Though in many cases it was a once-in-a-lifetime experience, some voyagers learned to control their trips.

This program has been a once-in-a-lifetime experience for every Fellow.

She had a chance at a once-in-a-lifetime experience and she tried to sell herself to me!

The game at the Garden is a once-in-a-lifetime experience.

No matter, the evening had the feel of a once-in-a-lifetime experience (and sufficient unto the day).