yapılması olanaksız iş

listen to the pronunciation of yapılması olanaksız iş
Турецкий язык - Английский Язык
tall order
A big job; a difficult challenge

Frank Macedo . . . said creating that many jobs in three years is a tall order..

a formidable task or requirement; "finishing in time was a tall order but we did it"
a formidable task or requirement; "finishing in time was a tall order but we did it