Ma Xingyuan, Liu Changquan and Liu Guodong. 1991. Geoscience transect of Xiangshui to Mandal, North China. Beijing: Geological Publ. House.是什么意思_Ma Xingyuan, Liu Changquan and Liu Guodong. 1991. Geoscience transect of Xiangshui to Mandal, North China. Beijing: Geological Publ. House.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句