Humanity has been trying to use the sun's light as a reliable source of energy for centuries.
几个世纪以来，人类一直试图利用太阳的光作为可靠的能源。
In fact, any new source of energy will be very welcome, as there is already a shortage of petroleum.
事实上，任何新的能源都将受到欢迎，因为石油已经短缺。
There couldn't be any plant or animal life since there's no sunlight, no source of energy to make food.
那里不可能有任何植物或动物，因为没有阳光，没有能源来制造食物。
The sun basically provides Earth with virtually unlimited source of energy everyday, but the problem has always been how do we tap this source of energy.
基本上，太阳每天为地球提供几乎无限的能源，但问题一直是我们该如何利用这能源。
Gharib and Graff set themselves the task of raising a 4.5-meter stone column from horizontal to vertical, using no source of energy except the wind.
加里卜与格拉芙制定了一项任务：仅利用风能，将一个水平放置的4.5米高石柱提至与地面垂直。
Globally, Russia will continue to be a reliable source of energy and other raw materials.
从全球角度来看，俄罗斯将继续是能源和其他原材料的可靠来源。
Breast milk is also an important source of energy and nutrients in children 6 to 23 months of age.
对于6 - 23月龄儿童，母乳也是能量和营养素的重要来源。
About 80% of Americans say they think nuclear power will be "an important future source of energy".
大约80%的美国人说他们认为核能将是一种“重要的未来能源”。
Coal is indeed a cheap source of energy, but its extraction is extremely costly to the environment.
煤炭其实是一种成本低廉的能源，但对它的采挖却耗资巨大。
These names come from the fact that the source of energy is the nucleus, or core, of the atom.
这个名称来自于原子能来源于核、或者原子核这样的事实。
In that way, the sun will be the only source of energy and the boat will be largely self-sufficient.
这样一来，太阳变成为唯一的能量来源，而这艘船将大大地变成自给自足。
One largely untapped source of energy, however, is the methane generated by cows on farms around the world.
然而，一种还未被大量开采的能源，是全球农场上奶牛所产生的沼气。
Carbohydrate, found in colorful fruits, yogurts, breads, cereals and more, is the prime source of energy.
碳水化合物在各种水果、酸奶酪、面包、谷类中很多，是能量的主要来源。
Your body converts most of the food you eat into a form of sugar called glucose, which is our main source of energy.
一个人吃掉的大部分食物会被分解成为葡萄糖，它是人体所需的主要能源物质。
If scientists can achieve it, it could offer a powerful source of energy with few negative environmental consequences.
如果科学家能够实现核聚变，就可以为人类提供对环境很有负面影响的强大能量来源。
McCain saidnuclear power was a clean source of energy that would be key to battlingclimate change and mocked Obama.
麦凯恩表示，核电是一项无污染能源，也将是解决气候变化的关键。他还对奥巴马进行了嘲讽。
An abstract representation, on the other hand, might refer to the corn plant as a source of energy or as a fast growing plant.
而另一方面，一种抽象的表征，可能指玉米作物作为能源原料或一个快速生长的植物。
A report by Switzerland's Paul Scherrer Institute estimates that DAMS are the most potentially hazardous source of energy.
瑞士PSI研究所的一份报告揭示了水坝是第一潜在风险源。
Done correctly, hydropower is a clean, renewable source of energy that India has in abundance, and Sharma has seen the alternative.
已经做的是正确的，水力发电是一项干净的、可再生的能源，印度也有大量的能源，并且沙玛也看到了选择性。
Breast milk is also a critical source of energy and nutrients during illness and reduces mortality among children who are malnourished.
母乳还是患儿获取能量和营养素的重要来源，并可降低营养不良儿童死亡率。
For most of human history, the labor of men and animals was the sole source of energy, and that placed significant limits on how much energy we could use.
回顾历史，能量大部分时间只能通过人畜的劳力获取，使能源及其使用非常之少。
However, Eddington's theory of gravity only worked for empty space and didn't include any source of energy such as matter, making it an incomplete theory.
然而，Eddington的引力理论仅对不包含任何如物质等能量源的真空适用，这使得它不能成为一套完整的理论。
An extravert has a source and direction of energy expression mainly in the external world while the introvert has a source of energy mainly in the internal world.
外向的活力表达来源和方向主要是外部世界，而内向的活力来源主要是内部世界。
Such an environment would have to contain the basic ingredients of life — including water, organic carbon and a source of energy to sustain the microbes' metabolism.
这样的火星环境也许包含了一些基本的生命要素——包括水，有机碳和维持微生物新陈代谢的能量源。
Such an environment would have to contain the basic ingredients of life-including water, organic carbon and a source of energy to sustain the microbes' metabolism.
这样的火星环境也许包含了一些基本的生命要素——包括水，有机碳和维持微生物新陈代谢的能量源。
I think future engineered species could be the source of food, hopefully a source of energy, environmental remediation and perhaps replacing the petrochemical industry.
也许未来的工程物种将成为我们的食物来源、能量来源、环境补救手段，甚至取代石化工业。
I think future engineered species could be the source of food, hopefully a source of energy, environmental remediation and perhaps replacing the petrochemical industry.
也许未来的工程物种将成为我们的食物来源、能量来源、环境补救手段，甚至取代石化工业。
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