hardly ever 英語で:

They ate in the dining room once in a blue moon.

I go to the cinema once in a blue moon.

We only see each other once in a blue moon. We should meet more often!

They call me once in a blue moon.

It only happens like this once in a blue moon.

I visit my parents once in a blue moon

My sister lives in Alaska, so I only see her once in a blue moon.

Due to the nature of my work, I get a holiday once in a blue moon, roughly once a year if I’m lucky.

He buys me flowers once in a blue moon

They come to visit us once in a blue moon.

He still writes, but only once in a blue moon.

I only see my cousins once in a blue moon.

Eating out is so expensive that we do it only once in a blue moon.

Tom comes to see his sister once in a blue moon.

He does jogging once in a blue moon. He definitely prefers working out in a gym.

I almost never eat out. I like cooking at home.

I almost never eat sushi. I'm not keen on that.