In Russia, while owning copyright is lawful, its citizens are only permitted to buy products from other people using the Russian ruble when nonresidents are allowed to use foreign forex.M?ng l??i blockchain ETH 2.0 ho?t ??ng t? n?m 2015 và nó s? không ???c tri?n khai trong m?t s?m m?t chi?u. M?t trong nh?ng m?c tiêu chính là t?ng c??ng n?ng l

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