Bu araba doğal gazla çalışır.
- This car runs on natural gas.
Kömür ve doğal gaz doğal yakıtlardır.
- Coal and natural gas are natural fuels.
Natural-gas prices.
... to make it a priority for us to go after natural gas. We've got potentially 600,000 jobs ...
... Number three, we've got to control our own energy. Now, not only oil and natural gas, ...