单词：phenyldimethanol
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By Brian Wagner Miami 30 March 2007 President Bush has set ambitious goals to reduce the country's dependence on oil, and increase the use of alternative fuels like ethanol. VOA's Brian Wagner reports from Miami that experts are now at work to ensure
2007年VOA标准英语（三月）
Many of the Burgess specimens have now been assigned to living phyla just where Walcott put them in the first place. 许多布尔吉斯标本现在已经归到活着的动物的门里就是沃尔科特最初放置它们的地方。 Hallucigenia and s
万物简史
This is Scientific Americans 60-Second Science. Im Steve Mirsky. Got a minute? To keep your car purring, you have to change the oil. Such maintenance produces eight billion gallons of used motor oil annually. Some waste oil does get re-refined to pro
Scientific American(三)月
Fun Fact: Alligators Can Regrow Teeth 有趣的事实：短嘴鳄可以再长牙齿 Fun fact about alligators: they can regrow any of their eighty teeth up to fifty times. Which is pretty impressive, especially compared to us relatively dentally chal
初学者听力文摘精选
its time again for the A Moment of Science mailbag. A listener writes: Dear A Moment of Science, Ive always been fascinated by volcanoes. So I was wondering: How well can scientists predict when and where a volcano will erupt? Intersting question. Th
英语听力文摘 English Digest
Today's podcast is going to test your knowledge of ethanol. What is it? How is it made? And what are the advantages and disadvantages of using it? I asked myself these questions recently, when I drove past a gas station that had a sign saying 'No eth
英语博客 A cup of English
This is Scientific American's 60-Second Science. I am Steve Mirsky.Got a minute? Talk about your vicious cycles. A new study finds that belly fat could be making you hungrier. Which would lead to more belly fat. The research was performed at the Univ
Scientific American(四)月
Algae seem harmless enough. These precursors to plants thrive throughout the world's waters. But these single-celled plants have global consequences. We can thank them for oxygen in the atmosphere, oil in the lithosphere as well as dead zones in the
Scientific American(十一)月
Chinese Ye wins 200m medley while Liu Zige dim BEIJING, Nov. 2 (Xinhua) -- London Olympic double winner Ye Shiwen claimed the women's 200-meter individual medley gold medal at the short course Beijing World Cup here on Friday, while Beijing Olympic c
英语新闻
Hopes Dim for US Ratification of Global Maritime Treaty Law of the Sea Convention Maritime defense, shipping, and natural resources extraction are but a few of the endeavors covered by the Law of the Sea Convention, which governs how nations use the
VOA标准英语2012年(七月)
By Paul Sisco Washington, DC 26 January 2007 watch Ethanol Alernative report In his State of the Union address, President Bush set an ambitious goal for the United States -- to reduce oil imports from the Middle East by 75 percent. He said this can
2007年VOA标准英语（一月）
Cutting Ethanol Subsidy Might Not Impact Food Prices With the U.S. ethanol industry consuming about a quarter of the nations maize crop, many have blamed biofuels for rising food prices in recent years. The new year brought the end to a $6-billion su
VOA标准英语2012年(一月)
Alternative Fuel Ethanol Hits a Wall 替代燃料乙醇遭遇难题/撞墙 When U.S. drivers fill their tanks with ethanol, they are essentially buying fermented corn grown by American farmers. A 2007 law requires gasoline makers to add increasing am
VOA标准英语2014年(五月)
By Lisa Schlein Geneva 05 June 2008 Special United Nations and African Union envoys on Darfur say prospects for substantive peace talks aimed at ending the crisis in Sudan's conflict ridden province of Darfur are dim. The diplomats failed to get pea
VOA标准英语2008年（六月）
By Greg Flakus Houston 16 October 2007 In recent months food costs in the United States have gone up by well over six percent and some economists see government-mandated use of bio-fuels as a key reason. But, as VOA's Greg Flakus reports from Houston
2007年VOA常速英语（十月）
By Paula Wolfson Sao Paulo 09 March 2007 The United States and Brazil are forming an informal alliance to push the production of ethanol. VOA White House Correspondent Paula Wolfson reports from Sao Paulo, the development and promotion of biofuels ma
2007年VOA标准英语（三月）
By Paul Sisco Washington 07 March 2007 watch Ethanol Alternative Fuel President Bush speaks to reporters about how cellulosic ethanol can be produced from biomass such as spruce wood chips President Bush leaves this week for a five nation Latin Amer
2007年VOA标准英语（三月）
By Jeffrey Young Washington 16 October 2007 U.S. farmers have gone through many cycles of boom and bust. But as VOA's Jeffrey Young reports, prospects for American agriculture are looking up, thanks to rising crop prices and land values, especially i
2007年VOA常速英语（十月）
NEW YORK, March 25 (Xinhua) -- Broadway （百老汇） in New York City of the United States will dim its lights on Friday night in memory of the iconic actress Elizabeth Taylor, who died on March 23 at the age of 79. Broadway theater marquees will
英语新闻
WASHINGTON, Aug. 4 (Xinhua) -- Researchers have found a way to turn mouse embryonic stem cells into sperm and this finding opens up new avenues for infertility research and treatment, according to astudy published Thursday in the online edition of jo
英语新闻