【简答题】Facing water shortages and escalating fertilizer costs, farmers in developing countries are using raw sewage ( 下水 道污水 ) to irrigate and fertilize nearly 49 million acres of cropland, according to a ne...
【简答题】Facing water shortages and escalating fertilizer costs, farmers in developing countries are using raw sewage ( 下水 道污水 ) to irrigate and fertilize nearly 49 million acres of cropland, according to a ne...