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If you have questions about the conjugation of провинциалка or Russian nouns in general, you can practice and get feedback from a professional tutor.
Ты станешь мелочной провинциалкой, такой же, как и все вокруг тебя.
You'll become small and provincial, like everyone around you.
я надеюсь вы не слишком резки с этой пожилой провинциалкой
I hope you weren't too sharp with that very provincial old lady.