The cost of solar panels has dropped by 80 percent and the cost of wind turbines by close to one-third in the past eight years.
在过去八年中，太阳能电池板的成本下降了80%，风力涡轮机的成本下降了近三分之一。
For more than 300 years, we thought Saturn was the only body in the solar system with rings.
在300多年的时间里，我们一直认为土星是太阳系唯一拥有光环的天体。
Last week, France announced that the country will pave 621 miles of road with solar panels over the next five years, with the goal of providing cheap, renewable energy to five million people.
上周，法国宣布将在未来5年内铺设一条长达621英里的太阳能公路，以期为500万民众提供便宜的可再生的能源。
One way of solving this theoretical difficulty is to assume a delay of thousands of years while the solar effects overcome the inertia of the earth's climate.
解决这一理论难题的一种方法是假设太阳效应克服地球气候的惯性时，地球会延迟数千年。
One way of solving this theoretical difficulty is to assume a delay of thousands of years while the solar effects overcome the inertia of the earth's climate.
解决这一理论难题的一种方法是假设太阳效应克服地球气候的惯性时，地球会延迟数千年。
Over the past ten years, the price of solar panels has gone down greatly.
在过去的十年里，太阳能电池板的价格大幅下降。
In China, the 24 solar terms were created thousands of years ago to guide agricultural production.
几千年前中国就创造了二十四节气用以指导农业生产。
The twenty four solar terms have a history of thousands of years in China.
二十四节气在中国已有几千年的历史。
After two years of hard work, the group paid for the solar panels, which now satisfy one-fourth of the school's electricity needs—saving the neighborhood thousands of dollars.
经过两年的努力，该组织购买了太阳能电池板，现在满足了学校四分之一的电力需求，为社区节省了数千美元。
Cars powered by gasoline were sold for many years before hybrid vehicles that use gasoline, electricity, and solar energy. Car companies are now making cars that are fully powered by electricity only.
在使用汽油、电力和太阳能的混合动力汽车出现之前，汽油动力汽车已经销售了很多年。汽车公司现在正在生产完全由电力驱动的汽车。
Even established companies like Sharp Corp., which has been in the solar business for nearly 50 years, are entering the field.
甚至连夏普这样经营了近50年太阳能业务的老牌公司，也正在加入到这个新领域中。
Looking at progress in computer chips, I dreamt about how cheap photovoltaic solar panels might become over the next 50 years.
看到人们在计算机芯片上取得的进展，我梦想着在未来50年光电太阳能电池板或许会变得非常廉价。
Their results show that Mars formed in as little as two to four million years after the birth of the solar system.
他们的研究结果显示，火星仅仅形成在太阳系形成之后的两百万到四百万年间。
The Earth could enter a new 'Little Ice Age' in the coming years due to low solar activity, astronomers believe.
由于太阳活动性下降，天文学家们相信在未来的几年内，地球可能将进入新的小冰河时期。
His new company, 1366 Technologies, promises to drive down the cost of solar energy over the next 15 years until it is competitive with coal.
他的新公司，1366技术公司，承诺在未来15年内降低太阳能成本，直到太阳能与煤的竞争力相当。
Solar activity rises and falls on a regular cycle of about 11 years.
太阳的活跃程度按照一个11年代周期涨落。
The extended collapse in solar activity these past two years may be precisely the right sort of test, in that it has significantly changed the amount of solar radiation bombarding our planet.
太阳活动在过去的两年发生减弱，这正正符合了上面的实验条件，因为其减弱能大大改变影响地球的太阳辐射。
Although 20 years is a very short period in solar terms, they've noticed a magnetic weakening trend.
虽然这20年时间对于太阳来说只是短短的一瞬，但他们发现了磁场有正在逐渐减弱的趋势。
Over the years the solar industry has been able continuously to reduce the cost of silicon-based solar panels.
多年来，太阳能行业持续不断地降低硅基太阳能板的成本。
In contrast to recent quiet times, our Sun is moving toward Solar Maximum, and for years will likely appear much more active.
比较于目前的平静时期，太阳正走向峰年，会有几年看上去特别活跃。
In contrast, Earth grew to its full size 50 to 100 million years after the solar system's birth, via collisions with other small bodies in the solar system.
相反，太阳系形成之后，地球经历了五千万到一亿年，通过无数太阳系里小的星体相互碰撞才有了今天的体积。
It's also not yet clear what technology is best suited for widespread use of solar power.Ten years from now, the solar panels most people buy might not even be made of silicon.
我们还不不确定什么样的技术适合太阳能技术的广发推广，10年之后，大多数人购买的太阳能板也许并不是有硅制造的。
Solar is not 10 or 20 years away, it is just five years away.
太阳能的到来用不了10年或20年的时间，5年就可以实现了。
The same could happen to solar energy, which is ten years behind wind, and geothermal, with a 20-year lag.
太阳能也会如此，但太阳能的应用比风能晚10年，比地热晚20年。
Altering the atmosphere could also weaken solar power and reverse years of work to close the hole in the ozone layer.
改变大气也会削弱太阳能，并让为关闭臭氧层空洞所做的多年努力付诸东流。
FOR 40 years or so, the price of solar panels fell steadily, as volumes grew and technology improved.
大约40年来，随着产量增长和科技进步，太阳能电池板价格稳步下降。
Although the commercial solar-cell business dates back almost 50 years, solar panels still cannot compete with fossil fuels when it comes to generating electricity relatively cheaply.
尽管商业化的太阳能电池业务可以追溯到50年以前，但是太阳能板在成本的考量上依旧无法与生物能源相竞争。
Just a few years ago, Mr. Maina said, "solar lights" were merely basic lanterns, dim and unreliable.
麦纳说，仅仅几年前，“太阳能照明”还只是一些最基本的电灯，又昏暗又不可靠。
These were all years with heavy sunspot activity -that is, years when the Earth received significantly more solar energy than in normal years.
这些都是太阳黑子活动剧烈的年份，即：地球所接收的太阳能比平常年份多的多的年份。
These were all years with heavy sunspot activity -that is, years when the Earth received significantly more solar energy than in normal years.
这些都是太阳黑子活动剧烈的年份，即：地球所接收的太阳能比平常年份多的多的年份。
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