A contrasting study on soil erosion under different rock desertification grads in karst gorge areas--A case study of the Huajiang demonstration area, Guizhou是什么意思_A contrasting study on soil erosion under different rock desertification grads in karst gorge areas--A case study of the Huajiang demonstration area, Guizhou在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句