Phrases Describing Experiences and Events

It was a once-in-a-lifetime experience.

B2

Meaning

The experience was very special and unlikely to happen again.

Example sentences

John: 'Traveling to Antarctica was incredible!'

Alice: 'It sounds like it was a once-in-a-lifetime experience.'

John: 'Definitely, it was a once-in-a-lifetime experience.'

Alice: 'Meeting that famous author was amazing.'