a hard nut to crack
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a hard nut to crack | a hard nut to crack Click to listen highlighted text! a hard nut to crack 1. twardy orzech do zgryzienia przykładowe zdania: 1. Refugee crisis is a hard nut to crack for Europe. Click to listen highlighted text! Refugee crisis is a hard nut to crack for Europe. - Kryzys migracyjny to dla Europy twardy orzech do zgryzienia.
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