So we are trying different types of energy now, alternative energy, but it proved quite difficult to find something that's as convenient and as cost-effective as oil, gas and coal.
Acum se încearcă diverse tipuri de energie, energii alternative, dar s-a dovedit dificil de găsit ceva la fel de convenabil şi rentabil ca ţiţeiul, gazele naturale şi cărbunele.