A study on the internal relations between the geological disasters and morgeography in karst areas--A case study in Guiyang of Guizhou是什么意思_A study on the internal relations between the geological disasters and morgeography in karst areas--A case study in Guiyang of Guizhou在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句