All right folks, let's continue our discussion of alternative energy sources and move on to what's probably the most well-known alternative energy source—solar energy.

好了，朋友们，让我们继续讨论替代能源，来说说可能是最著名的替代能源——太阳能。

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Hydrogen is an alternative energy source with high efficiency and pollution free.

氢能是高效、环保型替代能源。

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When it's processed, that oil can be turned into biofuel, an alternative energy source.

当对这种油料进行加工时，其可转化为生物燃料——这也是一种替代能源。

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At that point the anti-ethanol coalition will no doubt regroup to resume its misleading and strategically misguided campaign against ethanol as an alternative energy source.

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It says it needs nuclear power as an alternative energy source to meet booming electricity demand and preserve its large oil and gas reserves for export.

ECONOMIST: No appetite for carrots, no fear of sticks | The

Equally important, there has been a huge influx of cheap coal from the US, where the discovery of shale gas has provided an even cheaper alternative energy source.

BBC: Coal resurgence calls undermine clean energy commitments