杏吧原创

Maryland eyes expansion of geothermal industry

Credit: Getty Images/iStockphoto/vkp-australia

Maryland eyes expansion of geothermal industry

Homes in Frederick built with geothermal heat

Homes in Frederick built with geothermal heat

More geothermal energy

Maryland eyes expansion of geothermal industry

Maryland eyes expansion of geothermal industry

Homes in Frederick built with geothermal heat

Homes in Frederick built with geothermal heat

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