Ningxia is in the greatly active area of Neotectonics, and the degree of soil erosion in this area is very high.是什么意思_Ningxia is in the greatly active area of Neotectonics, and the degree of soil erosion in this area is very high.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句