The latter two rock types have a slaty to schistose structure, they are green in fresh state and show a silvery lustre on foliation planes.是什么意思_The latter two rock types have a slaty to schistose structure, they are green in fresh state and show a silvery lustre on foliation planes.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句