The two karat developing periods for the Middle and Upper Ordovician in the Lunnan area are consistent with two transgressions of the Carboniferous.是什么意思_The two karat developing periods for the Middle and Upper Ordovician in the Lunnan area are consistent with two transgressions of the Carboniferous.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句