标签：ecological 相关文章
Tsunami Sent Species on a Transoceanic Trip 海啸引发的物种跨洋迁移 The massive earthquake that rocked Japan in March 2011 took thousands of lives. It sent tsunami waves more than a hundred feet high towards northern Japan, where they batte
2017年Scientific American(十)月
Blended Organic-Conventional Farming Could Feed World In rural Maryland, an hour-and-a-half drive from Washington, Bill Mason is tilling his fields to plant organic maize and soybeans. About two-thirds of his 340 hectares are organic, but not all of
VOA标准英语2012年(六月)
A growing movement of scientists, students, farmers and forward-thinking business people are all saying Wait a minute! In fact, even the economists who invented the cap and trade system to deal with simpler problems like fertilizer pollution and sulf
英语解说豆知识2011年
ARI SHAPIRO, HOST: Climate scientists are struggling to figure out how a warming planet will affect different ecosystems like forests, swamps and grasslands. So researchers looked back at the end of the last ice age to see what might be in store for
2018年NPR美国国家公共电台9月
Lesson 31 Non-auditory Effects of Noise 噪音的非听觉效应 Many people in industry and the Services, who have practical experience of noise, regard any investigation of this question as a waste of time; they are not prepared even to admit the p
新概念英语85年上外美音版
Only about 23 percent of the worlds land area is still what youd call wildernesswhere indigenous people, wildlife, plants and microbes get a chance to live with little or no disturbance from large human populations. But even that current figure of 23
2016年Scientific American(九)月
More than half of U.S. households provide food for birds. It's a billion dollar industry. Now a study asks whether the same feeders that attract birds also attract predators that eat the eggs and newly hatched nestlings of those birds. We imagined th
2017年Scientific American(一)月
Unit 54 Slow Food Movement The International Slow Food Movement was founded in 1986 by leftist journalist Carlo Petrini in a determined effort to wage intellectual war on the homogenization of food around the world. Spurred by the opening of Italy's
英语流行话题阅读：语境识词4500
By Bill Gasperini Sakhalin, Russia 20 October 2006 A giant energy project on Russia's remote Sakhalin Island has recently come under scrutiny because of environmental concerns. A foreign run consortium has long been building parallel gas and oil pip
2006年VOA标准英语（十月）
By David McAlary Washington 01 November 2006 A panel of scientists says African hunger, malnutrition, and rural poverty could be lessened if researchers could improve native vegetables well suited to difficult growing conditions. Africa is home to h
2006年VOA标准英语（十一月)
By Mil Arcega Washington, DC 23 May 2006 watch Ewaste report Recycled computer keyboards The business of disposing electronic waste - or e-waste - is growing as computer usage increases around the wor
2006年VOA标准英语（五月）
Agriculture Report - Steps Toward Drought-Resistant Crops, 'Designer' Rice This is the VOA Special English Agriculture Report. A discovery in a laboratory could help lead to new generation of drought-resistant crops. Drought conditions cause plants t
2012年VOA慢速英语(一)月
By Cindy Saine Washington 18 January 2008 Google's philanthropic arm has announced $25 million in new grants and investment to help make the world a better place. The computer search engine is focusing on projects that include disease and disaster pr
VOA标准英语2008年（一月）
By Phil Mercer Sydney 23 January 2008 Scientists say stalagmites, the mineral spears that rise from the floors of some caves, could help Australia prepare for drought. Researchers at a rainfall conference in Sydney say the cave formations have accura
VOA标准英语2008年（一月）
By Steve Herman India Goa Land 23 January 2008 The tiny coastal state of Goa has become the first state in India to rescind the creation of special economic zones - putting it into conflict with the central government and powerful developers across t
VOA标准英语2008年（一月）
The United Nations is calling for billions of dollars to be spent by governments to fight climate change and greenhouse gasses to stem rising global temperatures. Smoke is seen rising from chimneys of the largest metal working company in Bulgaria (F
VOA标准英语2009年(九月)
Dietary Changes May Ease Climate Change Some scientists are advising a dietary approach to climate change. They say eating less meat can mitigate the effects of rising temperatures. However, the recommendation is being made at a time when meat consum
VOA标准英语2012年(六月)
Seals Feast at Offshore Wind Farms 海豹群在海上风力发电场享受盛宴 Offshore wind farms are harnessing more than wind.Says study lead author Deborah Russell, with the University of St.Andrews in Scotland,and her colleagues monitored the
VOA标准英语2014年(七月)
By David McAlary Washington 17 October 2006 Two new U.S. studies say the nutritional benefits of eating fish outweigh the potential hazards from environmental contaminants. Some environmental and consumer groups dispute the finding. ---- You may hav
2006年VOA标准英语（十月）
Gun Silencers 所谓消声手枪也不可能是完全无声，只是将声音尽量降低。手枪的消声方法有很多. 手枪的声音主要来自子弹出膛，空气冲出枪口是巨大的压力对外面的空气引起的冲击震动.消声器是
英语听力文摘 English Digest