Hidroelektrik yenilenebilir bir kaynaktır ama petrol, kömür ve doğal gaz değil.
- Hydropower is a renewable resource, but oil, coal and natural gas are not.
Bu araba doğal gazla çalışır.
- This car runs on natural gas.
Natural-gas prices.
... it's not just oil and natural gas production at the moment ...
... natural gas. And the proof is our oil imports are down ...