日本高清色视频在线视频在,国产香蕉97碰碰视频碰碰看,丰满少妇av无码区,精品无码专区在线,久久无码专区免费看,四虎欧美精品永久地址99,亚洲色无码一区二区三区

您現(xiàn)在的位置: Language Tips> Audio & Video> Special Speed News  
   
 





 
Bringing light to homes in poor countries
[ 2009-12-22 11:35 ]

 

去聽(tīng)寫(xiě)專區(qū)一展身手

英語(yǔ)學(xué)習(xí)論壇的“聽(tīng)力練習(xí)區(qū)”正式與大家見(jiàn)面啦。歡迎大家來(lái)這里練習(xí)聽(tīng)力,交流經(jīng)驗(yàn),共同進(jìn)步。

本練習(xí)區(qū)的音頻文件選自英語(yǔ)點(diǎn)津的“聽(tīng)中國(guó)日?qǐng)?bào)”、“VOA常速”、“流行金曲”及“名人演講”等欄目,題材豐富,難度各異,適合不同階段的英語(yǔ)學(xué)習(xí)者。

英語(yǔ)點(diǎn)津會(huì)定期發(fā)布音頻材料,大家可以在跟帖中貼出自己聽(tīng)寫(xiě)出的音頻文字稿。每個(gè)音頻材料的標(biāo)準(zhǔn)文字稿會(huì)在帖子發(fā)布兩天后公布。

進(jìn)入該文章的聽(tīng)寫(xiě)練習(xí)頁(yè)面

This is the VOA Special English Development Report.

More than one and a half billion people around the world live without electricity. Finding better ways to bring light to the poor is the goal of researchers like David Irvine-Halliday.

In the late 1990s, the Canadian professor was working in Nepal when his return flight was canceled. A delay gave him time to take a 14-day hiking trip in the Himalayas.

As he tells it, one day he looked in the window of a school and noticed how dark it was. This is a common problem for millions of children around the world -- and not just at school, but also at home.

Many families use kerosene oil lamps. There are many problems with these lamps. They produce only a small amount of light. They are dangerous to breathe. And they are a big fire danger, causing many injuries and deaths each year.

Kerosene costs less than other forms of lighting, but it is still costly in poor countries. Professor Irvine-Halliday says many people spend well over 100 dollars a year on the fuel.

When he returned to Canada, he began researching ways to provide safe, clean and affordable lighting. He began experimenting with light-emitting diodes, LEDs, at his laboratory at the University of Calgary in Alberta. As a professor of renewable energy, he already knew about the technology.

Light-emitting diodes are small glass lamps that use much less electricity than traditional bulbs and last much longer.

Professor Irvine-Halliday used a one-watt bright white L.E.D. made in Japan. He found it on the Internet and connected it to a bicycle-powered generator. He remembers thinking it was so bright, a child could read by the light of a single diode.

In 2000, after much research and many experiments, he returned to Nepal to put the systems into homes. His Light Up the World Foundation has now equipped the homes of 25,000 people in 51 countries.

DAVID IRVINE-HALLIDAY: "The one-time cost of our system -- which consists of a small solar panel, a little motorcycle-sized battery and a couple of LED lamps, which basically live forever, as well as the solar panel -- is less than 100 dollars. So, one year of kerosene would pay for a solid-state lighting system."

Now his aim is to develop a lower-cost lighting system. In January, David Irvine-Halliday is leaving the University of Calgary. He has also decided to give up leadership in the Light Up the World Foundation to start a company in India.

And that's the VOA Special English Development Report, written by June Simms with Rosanne Skirble. I'm Christopher Cruise.

kerosene: a thin oil distilled from petroleum or shale oil, used as a fuel for heating and cooking, in lamps, and as a denaturant for alcohol 煤油

diode: an electronic device that restricts current flow chiefly to one direction 兩極真空管

(來(lái)源:VOA 編輯:陳丹妮)

 

中國(guó)日?qǐng)?bào)網(wǎng)英語(yǔ)點(diǎn)津版權(quán)說(shuō)明:凡注明來(lái)源為“中國(guó)日?qǐng)?bào)網(wǎng)英語(yǔ)點(diǎn)津:XXX(署名)”的原創(chuàng)作品,除與中國(guó)日?qǐng)?bào)網(wǎng)簽署英語(yǔ)點(diǎn)津內(nèi)容授權(quán)協(xié)議的網(wǎng)站外,其他任何網(wǎng)站或單位未經(jīng)允許不得非法盜鏈、轉(zhuǎn)載和使用,違者必究。如需使用,請(qǐng)與010-84883631聯(lián)系;凡本網(wǎng)注明“來(lái)源:XXX(非英語(yǔ)點(diǎn)津)”的作品,均轉(zhuǎn)載自其它媒體,目的在于傳播更多信息,其他媒體如需轉(zhuǎn)載,請(qǐng)與稿件來(lái)源方聯(lián)系,如產(chǎn)生任何問(wèn)題與本網(wǎng)無(wú)關(guān);本網(wǎng)所發(fā)布的歌曲、電影片段,版權(quán)歸原作者所有,僅供學(xué)習(xí)與研究,如果侵權(quán),請(qǐng)?zhí)峁┌鏅?quán)證明,以便盡快刪除。
相關(guān)文章 Related Story
 
 
 
本頻道最新推薦
 
英國(guó)女王2009圣誕致辭
英語(yǔ)點(diǎn)津2009年度十大新聞熱詞
耐用品 durable goods
皮膚老化?生活習(xí)慣惹的禍
Merry Christmas in Beijing
翻吧推薦
 
論壇熱貼
 
萬(wàn)圣節(jié)問(wèn)題火熱征集!
翻譯達(dá)人評(píng)選,快來(lái)投票!
經(jīng)典英語(yǔ)口語(yǔ),不得不看(推薦)
I chocolate you!怎么翻譯?
請(qǐng)教obama演講里的一句話
 

 

<strong id="xdwva"><div id="xdwva"></div></strong>
<label id="xdwva"></label>

<thead id="xdwva"></thead>
    <label id="xdwva"></label>

  1. 日本高清色视频在线视频在,国产香蕉97碰碰视频碰碰看,丰满少妇av无码区,精品无码专区在线,久久无码专区免费看,四虎欧美精品永久地址99,亚洲色无码一区二区三区 久久九九久精品国产日韩经典 国产国语国拍精品 啊v在线观看高清无码 视频一区二区欧美 久久精品爱爱唉爱