In 2001, the total water supply in urban areas is 46.6 billion m3, 300 million m3 less than the previous year.是什么意思_In 2001, the total water supply in urban areas is 46.6 billion m3, 300 million m3 less than the previous year.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句