For thousands of years,a large number of peripheral rivers have been flowing into deserts,the water from which then will infiltrate underground or evaporate into the air.When desert sand engulfs and humans retreat,pre...For thousands of years,a large number of peripheral rivers have been flowing into deserts,the water from which then will infiltrate underground or evaporate into the air.When desert sand engulfs and humans retreat,precious freshwater resources lie dormant all the year round,making almost no contribution to human progress.展开更多
文摘For thousands of years,a large number of peripheral rivers have been flowing into deserts,the water from which then will infiltrate underground or evaporate into the air.When desert sand engulfs and humans retreat,precious freshwater resources lie dormant all the year round,making almost no contribution to human progress.
