为了既不让游泳的人冷得发抖，也不让能源账单飞涨，巴黎市想到了一些聪明的办法，将两种非常规来源的余热进行重复利用：电脑服务器和污水。

To keep its bathers from shivering and its energy bills from ballooning, the city has developed some clever ways to reuse excess heat from two unconventional sources, computer servers and sewage.

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