What is encouraging is that most of the imaginative and practical solutions used by these cities are affordable and they generate economic returns, including direct and indirect benefits for the poor.
令人鼓舞的是，这些城市利用的大多数有创意的和实际的解决方案都是可承受的，并带来了经济回报，其中包括贫困人口获得的直接的和间接的好处。
This extends and expands many of the solutions, including grid environments and even the basics of web services, but with a practical distribution approach.
这衍生了很多解决方案，包括网格环境，甚至还有 web 服务基础，但是都利用一种实用的分布方法。
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