fossil fuel
US /ˈfɑː.səl ˌfjuː.əl/
UK /ˈfɑː.səl ˌfjuː.əl/
1.
combustible fósil
a natural fuel such as coal or gas, formed in the geological past from the remains of living organisms.
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Burning fossil fuels releases carbon dioxide into the atmosphere.
La quema de combustibles fósiles libera dióxido de carbono a la atmósfera.
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Many countries are trying to reduce their reliance on fossil fuels.
Muchos países están tratando de reducir su dependencia de los combustibles fósiles.