In 1996 the UN issued a forecasting report that by 2050, the world population lacking water will be 2.4 billion.是什么意思_In 1996 the UN issued a forecasting report that by 2050, the world population lacking water will be 2.4 billion.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句