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почём знать?stresses
gen. nobody can tell; one never can tell; there is no telling; who can tell?; there's no telling; you never can tell; how is one to know?
idiom. you never know
inf. who knows? (Anglophile)
почём знать
gen. one never can tell; you never can tell
почём знать: 25 phrases in 4 subjects
General10
Informal9
Makarov5
Slang1