Kerogen is the leftover material of sporopollen element and lignin in original bodies in different thermal metamorphic period and it is the original material of gas-oil formation.是什么意思_Kerogen is the leftover material of sporopollen element and lignin in original bodies in different thermal metamorphic period and it is the original material of gas-oil formation.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句