Значение идиомы once in a blue moon

[once in a blue moon] {adv. phr.} Very rarely; very seldom; almostnever.

Coin collecting is interesting, hut you find a valuable coinonly once in a blue moon.

Once in a blue moon someone grows a verypale marigold, but no truly white marigolds have been raised.



За и против животных в зоопарке на английском.
British stereotypes.


Значение идиомы once in a blue moon