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:mrgreen:
That 'yet' thing is still unknown. It may be as well that this something will always remain on paper only. I.e. theoretically there is such thing (on paper), but there no such thing in...

I still think that this idiom can be translated directly.

http://www.google.com/search?hl=ru&clie ... %D0%BA&lr=

It's not as old as may be some other idiom so the meaning is universal, I think....

http://www.google.com/search?client=ope ... 8&oe=utf-8