раз на раз не приходится

• РАЗ НА РАЗ НЕ ПРИХОДИТСЯ coll

[sent; pres only; fixed WO]

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⇒ things, conditions etc do not repeat themselves, they are different every time:

- ift never the same twice;

- things are not always the same;

- [when comparing a less successful attempt, outcome etc with a more successful one] it can't be perfect every time.

     ♦ "Тут всегда такая хорошая рыбалка?" - "Ну, раз на раз не приходится". "Is the fishing here always this good?" "Well, it's never the same twice."

     ♦ "Осудят его?" - спросил Костенко. "Какой судья попадется, - сказал Садчиков. - Раз на раз не приходится" (Семенов 1). "Will he be convicted?" asked Kostyenko. "It depends on which judge he gets," said Sadchikov "Things are not always the same" (1a).