I only use that on special occasions, so it's as good as new.

我只在特殊场合用，所以它完好如新。

《柯林斯英汉双解大词典》

youdao

For special occasions, like a wedding, the wooden stilts were entirely covered with intricately decorated silver, or with small silver ornaments.

在特殊场合，如婚礼，用精心装饰的银饰完全盖住木质高跷，或者饰以小银饰。

youdao

This ballet was a kind of social dance that was performed during special occasions.

VOA: special.2011.01.26

I think also special occasions maybe, if you go to a Royal Ascot.

也可能是去特别的场合，比如去皇家赛马会。

英国皇家赛马会 - SpeakingMax英语口语达人

But her mother interrupts to say that Hiba does wear her jewelry for special occasions.

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Sure, once in a while, on special occasions, I'll throw a cookie or two in the bag.

NPR: Hide the Hot Fudge

The report often recommends of its preferred bottles "use with an appreciative audience" or "special occasions only".

BBC: UK government's tasting notes reveal wine diplomacy