it doesn't belong to the sphere of my expertise

Dobryi den'.
My first question is how to say correct this in English (I think the expression is different).
Moi vtoroi vopros, kak perevoditsya eto na russkii.

Spasibo

На второй вопрос могу ответить: я не эксперт в этой области

Я в этом не разбираюсь.
Шуточный вариант: В этой области я не Копенгаген, а скорее, Осло.

Quote:

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Originally Posted by Antonio1986

My first question is how to say correct this in English (I think the expression is different).

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I am not an expert in (whatever it is).
It is outside my purview.