A Study on the Mosaic Structure of the Landscape in the Semi-arid Urban-rural Junctional Areas--A Case Study in Xigu District, Lanzhou City是什么意思_A Study on the Mosaic Structure of the Landscape in the Semi-arid Urban-rural Junctional Areas--A Case Study in Xigu District, Lanzhou City在线翻译_英语_读音_用法_例句