In many parts of the world renewable energy is already a principal energy source.
在世界许多地方，可再生能源已经是一种主要的能源来源。
In a recent speech in Iowa, he dismissed wind power as an unreliable energy source.
最近在爱荷华州的一次演讲中，他将风力发电视为一种不可靠的能源。
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。
Which Green Energy Source Is the Best?
哪一种绿色能源才是最好的？
The second-most-hazardous energy source?
而第二危险源是什么呢？
They are increasingly being used as an energy source.
海洋覆盖了大部分地球，它是提供食物和其他产品的重要源头，海洋日益成为重要的能源仓库。
The problem is that fat is an inefficient energy source.
但问题是脂肪是个抵消的能量源。
It could prove to be an energy source in the future.
也许将来它会变成一种能源。
Artificial Leaf Turns Sunlight Into a Cheap Energy source.
“人工叶片”：将阳光转化为廉价能源。
Extroverted Personality Traits: Energy Source of extroverts.
外向人群性格特征：能量的源泉。
Why then did petroleum not emerge earlier as a serious energy source?
于是为什么石油没有更早的作为能源出现呢？
This is an approach that says we're not going to pick one energy source over another.
我们这么做并不是让一种能源替代另外一种。
But the fungi had munched through the treated plastic and used it all as an energy source.
而真菌却大肆吞噬了处理过的塑料，并从中获取能量。
But I keep hearing them touted as a clean energy source that will do great things for the planet.
但是我经常会听到核能源被宣传为一种对地球有好处的清洁能源。
Scientists are still trying to find ways to make solar power a more widely used energy source.
科学家们至今仍在设法充分利用太阳能。
Nuclear power is the only abundant energy source we have that emits nearly no greenhouse gases.
核能是已知的充足无污染的能源，几乎没有任何温室气体排放。
Scientists thought formate was too poor an energy source to support life. But these archaea do fine.
科学家认为甲酸盐做为供养生命的能量源简直太苛刻了，但是这些古细菌却很好地生存下来。
He and some of his grad students wanted to use nitrous oxide as an emissions-free energy source.
他和他班上一些大学生想利用氧化氮作为无排放的动力能源。
Biofuels have been around for a long time and they are the least expensive renewable energy source.
生物燃料已经被使用了很长时间，并且它也是最便宜的可再生能源。
The principal metabolic pathway of RBC is glycolysis, and the main energy source in most species is glucose.
红细胞的主要代谢途径是糖酵解，而大多数物种的主要能量来源是葡萄糖。
Many states have abundant coal, whose technology is continuously making it into a cleaner energy source.
美国许多州有着丰富的煤，它们的技术在不断地把煤转化成更加清洁的能源。
All life on Earth needs water, carbon-based organic molecules, and an energy source, either solar or chemical.
地球上所有的生命都需要水、碳基有机分子和某种能量来源——不是太阳能就是化学能。
Lastly, while I still have an audience, I would like to bring attention to an alternative food and energy source.
最后，当我还有一个读者的时候，我想提请人们注意一种替代食品和能源的来源。
First, because sunlight is a diffuse energy source, they need to spread out over a large area as cheaply as possible.
首先，因为阳光是弥漫性能量来源，光电面板需要尽可能成本低廉的大面积铺开。
So, while high-altitude wind may ultimately prove to be a major energy source, it requires substantial infrastructure.
因此，尽管高空风能可能最终被证明是一个主要的能源来源，它仍然需要大量的基础设施。
Oil is the biggest single energy source and replacements for the energy-dense, easily transported fuel are hard to find.
石油是最大的单一能源和替代品，因为高能量且容易运输的燃料太难找寻。
Stretching across terrain already gridded by Andalusian farms, Andasol 1 and 2 rely on the same energy source as the crops.
辽阔的地形已经被安达卢西亚农场分成格子，安达索尔1和2像农作物一样依靠同样的能源。
Stretching across terrain already gridded by Andalusian farms, Andasol 1 and 2 rely on the same energy source as the crops.
辽阔的地形已经被安达卢西亚农场分成格子，安达索尔1和2像农作物一样依靠同样的能源。
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