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SSS 2008-02-28

时间:2010-05-13 02:55来源:互联网 提供网友:0922013129   字体: [ ]
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    (单词翻译:双击或拖选)

This is Scientific American’s 60-Second Science, I’m Cynthia Graber. This will just take a minute.

 The history of science is inextricably linked to the Galapagos and its influence on Darwin. In 2001, an oil tanker1 hit a reef in the Galapagos Islands and spilled potentially disastrous2 amounts of oil on one of the world’s most historic natural reserves. Today the Galapagos are starting down a path to do away with imported oil. Ecuador which owns the islands recently installed three wind turbines in cooperation with the UN and major energy companies. Wind power will replace half of the diesel3 previously4 needed. But there are challenges. First the electrical grid5 must be updated to accomodate the intermittent6 power supplied by wind. And there are also ecological7 issues. One of the original proposed sites contained nests of birds known as petrels. But after they moved to the site researchers realized they knew little about the flight patterns of the petrels. So they initiated8 a study. Once it was determined9 that the birds would fly safely out of the way of giant turbine blades, construction began. The addition of solar power could make the Galapagos nearly energy independent by 2015 and free from many further oil spills.

 Thanks for the minute for Scientific American’s 60-Second Science. I’m Cynthia Graber.
 


点击收听单词发音收听单词发音  

1 tanker xqawA     
n.油轮
参考例句:
  • The tanker took on 200,000 barrels of crude oil.油轮装载了二十万桶原油。
  • Heavy seas had pounded the tanker into three parts.汹涌的巨浪把油轮撞成三载。
2 disastrous 2ujx0     
adj.灾难性的,造成灾害的;极坏的,很糟的
参考例句:
  • The heavy rainstorm caused a disastrous flood.暴雨成灾。
  • Her investment had disastrous consequences.She lost everything she owned.她的投资结果很惨,血本无归。
3 diesel ql6zo     
n.柴油发动机,内燃机
参考例句:
  • We experimented with diesel engines to drive the pumps.我们试着用柴油机来带动水泵。
  • My tractor operates on diesel oil.我的那台拖拉机用柴油开动。
4 previously bkzzzC     
adv.以前,先前(地)
参考例句:
  • The bicycle tyre blew out at a previously damaged point.自行车胎在以前损坏过的地方又爆开了。
  • Let me digress for a moment and explain what had happened previously.让我岔开一会儿,解释原先发生了什么。
5 grid 5rPzpK     
n.高压输电线路网;地图坐标方格;格栅
参考例句:
  • In this application,the carrier is used to encapsulate the grid.在这种情况下,要用载体把格栅密封起来。
  • Modern gauges consist of metal foil in the form of a grid.现代应变仪则由网格形式的金属片组成。
6 intermittent ebCzV     
adj.间歇的,断断续续的
参考例句:
  • Did you hear the intermittent sound outside?你听见外面时断时续的声音了吗?
  • In the daytime intermittent rains freshened all the earth.白天里,时断时续地下着雨,使整个大地都生气勃勃了。
7 ecological IrRxX     
adj.生态的,生态学的
参考例句:
  • The region has been declared an ecological disaster zone.这个地区已经宣布为生态灾难区。
  • Each animal has its ecological niche.每种动物都有自己的生态位.
8 initiated 9cd5622f36ab9090359c3cf3ca4ddda3     
n. 创始人 adj. 新加入的 vt. 开始,创始,启蒙,介绍加入
参考例句:
  • He has not yet been thoroughly initiated into the mysteries of computers. 他对计算机的奥秘尚未入门。
  • The artist initiated the girl into the art world in France. 这个艺术家介绍这个女孩加入巴黎艺术界。
9 determined duszmP     
adj.坚定的;有决心的
参考例句:
  • I have determined on going to Tibet after graduation.我已决定毕业后去西藏。
  • He determined to view the rooms behind the office.他决定查看一下办公室后面的房间。
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