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VOA慢速英语2009年-Development Report - Houses Made of Straw

时间:2009-11-07 02:59来源:互联网 提供网友:aa123   字体: [ ]
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This is the VOA Special English Development Report.

Today we bring you a new take on an old tale. It's the story of the three little pigs and the big bad wolf that blew down a house made of straw and one made of sticks. The only house left standing1 was the one made of bricks. Now there is new evidence to suggest that houses built with bales of straw can be very strong. They are also environmentally friendly.
 
Professor Pete Walker and Dr. Katharine Beadle are leading the research at the University of Bath

Pete Walker is a professor at the University of Bath in Britain. He and a team of researchers there have built a house made out of straw bale and hemp2 material.

During the next twelve months the team will study the effectiveness of these materials in home building. Professor Walker says there are many good reasons for using straw.

PETE WALKER: "One of the benefits is it's a relatively3 inexpensive renewable material that's readily available."

Professor Walker says straw takes in carbon dioxide as it grows. So it can be seen as having no harmful effects on the environment. He says straw helps the environment in other ways.

PETE WALKER: "The straw bales walls are relatively thick and so all that straw provides very good thermal4 insulation5. So we make buildings that require very little heating in the winter or indeed very little cooling in the summer. So they require very little additional energy."

Professor Walker says this reduces home operating expenses. It also reduces the effect on the environment. He says the current interest in straw bale houses is a direct response to the problem of climate change.

David Lanfear owns an eco-friendly home building service in the United States called Bale on Bale Construction.

He says he laughed when some friends first told him about houses built of straw. But after doing his own research, he learned that building with straw bales makes a lot of sense. He has now helped to build more than ten straw bale houses and says the building material is becoming more widely accepted.

To build the houses, he fills a wood frame with tightly packed bales of straw. Next he coats the walls inside and out with layers of clay plaster. He says the common ideas about straw houses continue, including stories about the threat of fire. Mister Lanfear says straw bale houses have done well when tested for fire resistance. And he says his builders use the same building methods as traditional builders to keep out rain.

DAVID LANFEAR: "We use what we call good shoes and a good hat, and that would be a solid foundation and a really good roof."

And that's the VOA Special English Development Report, written by June Simms. I'm Steve Ember.


点击收听单词发音收听单词发音  

1 standing 2hCzgo     
n.持续,地位;adj.永久的,不动的,直立的,不流动的
参考例句:
  • After the earthquake only a few houses were left standing.地震过后只有几幢房屋还立着。
  • They're standing out against any change in the law.他们坚决反对对法律做任何修改。
2 hemp 5rvzFn     
n.大麻;纤维
参考例句:
  • The early Chinese built suspension bridges of hemp rope.古代的中国人建造过麻绳悬索桥。
  • The blanket was woven from hemp and embroidered with wool.毯子是由亚麻编织,羊毛镶边的。
3 relatively bkqzS3     
adv.比较...地,相对地
参考例句:
  • The rabbit is a relatively recent introduction in Australia.兔子是相对较新引入澳大利亚的物种。
  • The operation was relatively painless.手术相对来说不痛。
4 thermal 8Guyc     
adj.热的,由热造成的;保暖的
参考例句:
  • They will build another thermal power station.他们要另外建一座热能发电站。
  • Volcanic activity has created thermal springs and boiling mud pools.火山活动产生了温泉和沸腾的泥浆池。
5 insulation Q5Jxt     
n.隔离;绝缘;隔热
参考例句:
  • Please examine the insulation of the electric wires in my house.请检查一下我屋子里电线的绝缘情况。
  • It is always difficult to assure good insulation between the electric leads.要保证两个电触头之间有良好的绝缘总是很困难的。
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