冰岛人一年四季泡地热游泳池的社交传统
In Iceland, the weather is often cold and windy. But people still go outside to swim. They swim in warm, outdoor pools. These pools get heat from the ground, called geothermal energy.
Geothermal means heat from inside the earth. The water is about 30 to 40 degrees Celsius. It is very warm and nice for the body. The air outside can be below zero, but the water keeps you warm.
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