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SSS 2012-03-20

时间:2012-04-16 06:04来源:互联网 提供网友:gmeng   字体: [ ]
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    (单词翻译:双击或拖选)

 This is Scientific American 60 Second Science, I am Sophie Bushwick, got a minute?

 
Is the attempt to make environmentally friendly roadways doomed1 to wind up in the toilet? Actually, it may be the other way around.
 
To earn a green certification, the Meador Kansas Ellis Trail in Bellingham, Washington, included 400 recycled commodes in the concrete. 
 
Greenroads is a new rating system, developed at the University of Washington, which judges the sustainability of roads and road construction projects. Under the system, projects must incorporate 11 specific features, such as dealing2 with waste from the construction process, as well as some optional practices, which in the case of the Meador Kansas Ellis Trail included recycling.
 
The toilet interment helped the project win the first official Greenroads nod, earning a silver certification. About 30 percent of the pavement consists of recycled concrete and, yes, crushed-up toilets, nicknamed “poticrete.”
 
But this project’s sustainability relies on more than old thrones. The Trail’s porous3 concrete prevents excessive run-off; it’s illuminated4 with low-energy lighting5; and its mere6 presence encourages bicycle and foot traffic. These green features mean that sustainable roadways can be more than a pipe dream.
 
Thanks for the minute, for Scientific American, I am Sophie Bushwick.

点击收听单词发音收听单词发音  

1 doomed EuuzC1     
命定的
参考例句:
  • The court doomed the accused to a long term of imprisonment. 法庭判处被告长期监禁。
  • A country ruled by an iron hand is doomed to suffer. 被铁腕人物统治的国家定会遭受不幸的。
2 dealing NvjzWP     
n.经商方法,待人态度
参考例句:
  • This store has an excellent reputation for fair dealing.该商店因买卖公道而享有极高的声誉。
  • His fair dealing earned our confidence.他的诚实的行为获得我们的信任。
3 porous 91szq     
adj.可渗透的,多孔的
参考例句:
  • He added sand to the soil to make it more porous.他往土里掺沙子以提高渗水性能。
  • The shell has to be slightly porous to enable oxygen to pass in.外壳不得不有些细小的孔以便能使氧气通过。
4 illuminated 98b351e9bc282af85e83e767e5ec76b8     
adj.被照明的;受启迪的
参考例句:
  • Floodlights illuminated the stadium. 泛光灯照亮了体育场。
  • the illuminated city at night 夜幕中万家灯火的城市
5 lighting CpszPL     
n.照明,光线的明暗,舞台灯光
参考例句:
  • The gas lamp gradually lost ground to electric lighting.煤气灯逐渐为电灯所代替。
  • The lighting in that restaurant is soft and romantic.那个餐馆照明柔和而且浪漫。
6 mere rC1xE     
adj.纯粹的;仅仅,只不过
参考例句:
  • That is a mere repetition of what you said before.那不过是重复了你以前讲的话。
  • It's a mere waste of time waiting any longer.再等下去纯粹是浪费时间。
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