A group of rugged mountains of southwest South Dakota and northeast Wyoming rising to 2,208.8 m (7,242 ft) at Harney Peak. The Black Hills are a major recreational area.是什么意思_A group of rugged mountains of southwest South Dakota and northeast Wyoming rising to 2,208.8 m (7,242 ft) at Harney Peak. The Black Hills are a major recreational area.在线翻译_英语_读音_用法_例句