Halil İnalcık SAC-Idioms ePictionary
This is the final product of "I SPY WITH MY LITTLE EYE" eTwinning project.
This is the final product of "I SPY WITH MY LITTLE EYE" eTwinning project.
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A H A R D N U T T O
C R A C K
Meaning: a problem that is
very difficult to solve or a person who is
very difficult to understand
The problem is a hard nut to crack.