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до скончания века stresses
gen.	till kingdom come (Ремедиос_П); till the end of time; until the end of time (SergeiAstrashevsky)
Makarov.	end of time; to the end of time
до скончания веков
gen.	from now to doomsday (AlexanderK)
Игорь Миг	until the end of the age
slang	until hell freezes over
До скончания веков
lat.	Ad finem saeculorum