a former communist country in eastern Europe and northern Asia; established in 1922; included Russia and 14 other soviet socialist republics (Ukraine and Byelorussia an others); officially dissolved 31 December 1991.

• 以前是一个位于欧洲东部亚洲北部的社会主义国家；年建立；包括俄罗斯和其他个社会主义共和国；年月日正式解体。