最初活动于色楞格河和鄂尔浑河流域，后迁居土拉河北。

最初活动于色楞格河和鄂尔浑河流域，后迁居土拉河北。的英文翻译

基本释义

• They were first active in the Selenga and Orkhon river basins,and later moved to the north of the Tura River.