крепкий орешек

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Russian

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Pronunciation

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  • IPA(key): [ˈkrʲepkʲɪj ɐˈrʲeʂɨk]

Noun

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кре́пкий оре́шек (krépkij oréšekm inan (genitive кре́пкого оре́шка, nominative plural кре́пкие оре́шки, genitive plural кре́пких оре́шков)

  1. (idiomatic) tough nut to crack (challenging problem to solve)

Declension

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