flood/drought period/season
desalination淡化
reservoir水庫(kù)
aquifer蓄水層
sewage下水道
irrigation灌溉
pristine原始的
drill a well鉆井
extraction提取
flood/drought period/season
desalination淡化
reservoir水庫(kù)
aquifer蓄水層
sewage下水道
irrigation灌溉
pristine原始的
drill a well鉆井
extraction提取