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LEOs Zusatzinformationen: a hard nut to crack - problème difficile à résoudre

o

a hard nut to crack

Definition (American English)

a, hard, nut, to, crack
Merriam Webster

Thesaurus, synonyms, antonyms

a, hard, nut, to, crack
Merriam Webster

Etymology

a, hard, nut, to, crack
Online Etymology Dictionary
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problème difficile à résoudre

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