#WorldWaterDay: Did you know that up to 20% of all drinking water in Switzerland comes from lakes and rivers? From… https://t.co/OK81kz7omQ

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2021.03.22

#WorldWaterDay: Did you know that up to 20% of all drinking water in Switzerland comes from lakes and rivers? From… https://t.co/OK81kz7omQ
Source: スイス観光

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