A sum of 6.10 million tons of coal will be substituted by natural gas,of which 0.50 million tons for cooking,the other 5.6 million tons for space heating and industrial use.是什么意思_A sum of 6.10 million tons of coal will be substituted by natural gas,of which 0.50 million tons for cooking,the other 5.6 million tons for space heating and industrial use.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句