The Huaibei city covers an area of 2,741 km2, among which the urban area 57.57 km2, with a population of 719,600.是什么意思_The Huaibei city covers an area of 2,741 km2, among which the urban area 57.57 km2, with a population of 719,600.在线翻译_英语_读音_用法_例句