Light hydrocarbon is a petrochemical byproduct,which can be used as a kind of cheap and clean fuel to protect environment and save energy resource.是什么意思_Light hydrocarbon is a petrochemical byproduct,which can be used as a kind of cheap and clean fuel to protect environment and save energy resource.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句