This energy can be produced by capturing hot water and steam from deep in the earth or by using the relatively constant temperature of shallow ground to heat and cool.

 
  • 地熱可從地底下的熱水和蒸氣來(lái)產(chǎn)生,或是利用地表淺層相對而持續的溫度來(lái)加熱和冷卻。
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