When I turn them on to see where I need to continue cleaning, I see many, small, yellow hand prints on the walls.

我打开来看效果，然后发现墙上还有好多黄色的手印需要清理。

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Thus, in cities where rain frequently, constructions adopted this painting will no longer need any more water or cleanser. As a result, you can save more water and cost in your cleaning.

因此，在有较多雨水的城市建筑，如果使用该产品，则可以 不再需要用水和洗涤剂清洗外墙，节省了水资源，也避免了洗涤剂产生的化学污水污染和大量清洗成本 。

youdao

Thus, in cities where rain frequently, constructions adopted this painting will no longer need any more water or cleanser. As a result, you can save more water and cost in your cleaning.

因此，在有较多雨水的城市建筑，如果使用该产品，则可以 不再需要用水和洗涤剂清洗外墙，节省了水资源，也避免了洗涤剂产生的化学污水污染和大量清洗成本 。

youdao