这是一种倍增太阳能电力的便宜方法；不用制造很多昂贵的太阳能电池板，使用相对便宜的镜子，你就可以得到相同数量的电。
It's a cheap way to multiply solar power; instead of producing lots of expensive PV panels, you can get the same amount of electricity with relatively cheap mirrors.
米兰。卡尅，这个糊口在尼泊尔偏远墟落的18岁少年，用人类头发更换硅片，这是一种普遍但却昂贵的太阳能电池板原料。
Milan Karki, who is 18 years old and lives in a village in rural Nepal, used human hair to replace silicon, which is a common but expensive component of solar panels.
用硅制造太阳能电池——这是最普通的方法——昂贵而且只能得到很低的光-电转换效率。
Making solar cells from silicon, the most common approach, can be expensive and relatively inefficient at turning sunlight into electricity.
今天，我们离这个目标还远着：相对于便宜的化石燃料来说，大肆宣传的科技，如风能和太阳能，仍然是非常昂贵和低效的。
We are far from that point today: much-hyped technologies such as wind and solar energy remain very expensive and inefficient compared with cheap fossil fuels.
目前，太阳能降温设备是很昂贵的。
其它的利用太阳光分解水的方案依赖于腐蚀性溶液或者相对稀有且昂贵的材料比如铂合金。
Other attempts to produce devices that could use sunlight to split water have relied on corrosive solutions or on relatively rare and expensive materials such as platinum.
该方法的缺点在于集光型太阳能收集器往往体积比较庞大且造价昂贵，以及太阳光泵浦激光正常情况下功率太低。
The trouble is that concentrated solar collectors tend to be huge and costly, and solar-pumped lasers are normally very low powered.
作为太阳能电池基础材料的纯硅，是昂贵的，因而这诱使其使用减少。
Purified silicon, the basic material of such cells, is expensive. The temptation, therefore, is to use less of it.
CPV技术大大减少了我们对光伏原材料的需求。而这种原材料是太阳能电厂中最昂贵的部分。
CPV technology reduces the need for large amounts of photovoltaic material, which is often the most expensive part of a solar operation.
使用太阳能面板直接发电的太阳能光伏电池在个别建筑和小型地理区域是受欢迎的，但是大规模的使用是非常昂贵的。
Solar photovoltaic (PV) cells, which use solar panels to directly generate energy are popular for individual buildings or small geographic areas, but large scale use is expensive.
公用事业很支持这样的系统，也称为太阳热能，比光伏太阳能昂贵。
Utilities often favor such systems, also called solar thermal, over costlier PV.
由于硅材料是传统太阳能电池中一种很昂贵的成分，所以一种只需要1/50这种半导体材料的太阳能电池投入生产将更加便宜。
Since the silicon material is an expensive component of a conventional solar cell, a cell that requires just one-fiftieth of the amount of this semiconductor will be much cheaper to produce.
对太阳能电池板而言，电池面板内部的导体元件必须采用既透明，电导率又高的材料进行制作，目前用来制作这种导体元件的材料主要是铟和锡元素的氧化物 （ITO），不过ITO材料非常昂贵。
Conductors of electricity on solar panels ideally must be transparent and highly conductive. One solution currently used is indium tin oxide (ITO); however, ITO is very expensive.
使用太阳能，您不需要支付昂贵的电力。
Using solar power, you don't need to pay for expensive electricity .
这对制造商是件好事，但是却使在世界上阳光更充沛的地方装置太阳能容量的成本更加昂贵，而在那些地方能够生产更多的电力。
This is wonderful for manufacturers, but makes it more expensive to install solar capacity in sunnier parts of the world, where it would generate more electricity.
我打开易贝，但是他们的商品跟别的地方没什么两样：昂贵的意大利或美国太阳镜，还有打折的中国眼镜。
I try eBay, but its dealers don't offer anything better than what I've seen elsewhere: pricey Italian and American sunglasses or discount Chinese ones.
欧洲对太阳能产业的扶持表明这项产业不仅十分昂贵，而且可行性不高。
Europe's solar subsidies have proved not just expensive, but also unreliable.
在核和化石加燃料发电厂之间的大的经济差别是建造并且使退役核反应堆更昂贵，但是更到太阳便宜。
The big economic difference between nuclear and fossil-fuelled power stations is that nuclear reactors are more expensive to build and decommission, but cheaper to sun.
同样的建筑物，同样的窗户（配备），但是如果朝向不对（比如面朝太阳），那么学校的制冷（费用）就非常昂贵。
You have the same building, same set of windows, but if its orientation is incorrect and it faces the sun, it will be really expensive to cool.
住在地球上实在太昂贵……可是我们年年能绕着太阳跑，那是地球赐给我们的免费旅行。
Living on Earth is expensive... but it does include a free trip around the sun every year.
然而，太阳跟踪器的安装和运转都很昂贵，并且很容易造成过度加热电池，这足以降低它们的效率，甚至会造成毁损。
Such trackers, however, are expensive to install and run, and are prone to heat the cells up too much, which reduces their efficiency and may damage them.
也有可能在太阳能、风能或者其他当前未知的可替代能源方面产生重大的突破，使得聚变能相比之下既昂贵又难以操作。
Or it could be that a breakthrough in solar, wind or some other as yet unforeseen alternative energy makes fusion appear expensive and unwieldy by comparison.
太阳能电池几乎可装在任何地方，唯一的问题是价格还是相对昂贵，惟有当价格更有竞争力时，太阳能应用才能普及。
Solar voltaic cells can be installed nearly anywhere. The primary problem today is that they are still relatively expensive. Prices must be lowered in order for them to gain widespread acceptance.
但是鉴于目前太阳能电池板的产量以及昂贵的价格，这个过程并不是能大量生产的。
But the process is not particularly productive, given the present output of solar panels, and it is costly.
但是鉴于目前太阳能电池板的产量以及昂贵的价格，这个过程并不是能大量生产的。
But the process is not particularly productive, given the present output of solar panels, and it is costly.
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