But, according to the natural monopoly theory and the policy conclusion natural monopoly industry in various countries generally has low quality and high price and the serious loss problem.是什么意思_But, according to the natural monopoly theory and the policy conclusion natural monopoly industry in various countries generally has low quality and high price and the serious loss problem.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句