污水灌溉 wastewater irrigation
Up to 50 million households globally rely on wastewater irrigation for their livelihoods.
为了生计，全球有将近5000万农户依靠污水灌溉。
In Africa wastewater is increasingly becoming important resource for various uses including irrigation in urban and peri-urban agriculture.
在非洲，经过处理的废水正在成为一种越来越重要的资源被广泛使用，如被用作都市农业和城郊农业的灌溉用水。
