有人认为，一旦将发电成本综合考虑在内，在能源使用方面，电动汽车的效率只能达到目前现代柴油车的一半。

Some say that once the costs of power generation are factored into the equations, electric cars are only half as efficient with regard to energy use as modern diesel vehicles.

youdao

运输由使用石油到生物燃料的过渡以及汽车燃料效率的提高。

A transition in transportation USES from oil to biofuels and increases in auto fuel efficiencies.

youdao

他说，更好的做法是提高能源利用效率，在特定汽车市场主要使用天然气而且合理进行风能和太阳能发电设施的持续建设。

It would be better, he argues, to improve energy efficiency, rely on natural gas in niche vehicle markets and balance continued construction of wind and solar power to produce electricity.

youdao