Rainwater harvesting is used for toilet flushing, laundry and landscape irrigation.

雨水收集用于冲洗厕所、洗衣和景观灌溉。

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Sixth: With having the water issue of Tehran in our minds we have added a water harvesting system to the project to collect the rainwater from the roof; to be used for irrigation after filtration.

第六：德黑兰缺水的问题，在我们设计中添加了一个集水系统，从屋顶收集雨水过滤后用于灌溉。

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A lot of research shows that rainwater harvesting and water saving irrigation technique can not only utilize rainfall most, but also be beneficial to improve the planting environment.

大量的研究表明，集雨节灌不仅能最大限度的利用雨水资源，而且有益于改善农业种植环境。

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