| The opportunity to perform a once-in-a-lifetime acoustics experiment began to take root in my mind. |
| However, many of the moments that are captured by camcorders are once-in-a-lifetime and can't be replicated if the disc fails. |
| When asked if they will return next year, some marchers said that it is a once-in-a-lifetime experience that cannot be duplicated. |
| There's no need to say that to go fly fishing was my first priority: I could not miss this once-in-a-lifetime chance! |
| A once-in-a-lifetime chance to start a business of your own, for instance, may dictate staking everything you're worth on it. |
| These events represent a once-in-a-lifetime opportunity for young writers to present their work before a bilingual audience. |
