该数组是安装在对一的块屋顶水箱的房间。
The array is mounted on the tank room on the roof of one of the blocks.
当看见有水从屋顶流下的时候，你就知道水箱满了。
When you see water coming off the roof, you will know that the tank is full.
由于没有可靠的管道用水，那里的人们会把水存放在屋顶的水箱、水桶和类似的容器中。
With unreliable access to piped water, people there store water in rooftop cisterns, buckets and the like.
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