单词：acetone-ethanol fermentation
单词：acetone-ethanol fermentation 相关文章
VOICE ONE: Im Steve Ember. VOICE TWO: And Im Barbara Klein with EXPLORATIONS in VOA Special English. Today we tell about growing food problems around the world. (MUSIC) VOICE ONE: Food prices are rising in many countries. Economic policy makers warn
VOA慢速英语2008年（四）月
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）
Simple New Test Detects Early Signs of Diabetes 新型简单测试或能检测出糖尿病早期迹象 People with Type 1 diabetes, usually diagnosed in children and young adults, must take insulin injections and watch their diet to keep their blood
VOA标准英语2015年(一月)
Air pollution outside is easy to spot, hanging over the city, or sputtering from a tailpipe. But there's lot of indoor air pollution, too, even if it's not as obvious. It's caused by volatile organic compounds, or VOCs. They can come from building ma
2016年Scientific American(八)月
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
AGRICULTURE REPORT - Making Cheese the Traditional Way, Part Two By Mario Ritter Broadcast: Tuesday, October 04, 2005 I'm Jim Tedder with the VOA Special English Agriculture Report. Last week, we hear
农业与发展
This is Scientific American's 60-Second Science, I am Karen Hopkin. This will just take a minute. I once took part in a vodka tasting contest, in which participants tried to tell an expensive brand from a cheap one. I dont recall the exact outcome, f
Scientific American(六)月
FAITH LAPIDUS: Im Faith Lapidus. DOUG JOHNSON: And Im Doug Johnson with EXPLORATIONS in VOA Special English. Since ancient times, people have grown grapes to produce wine. Join us as we tell about the history of wine and how it is made. We will also
2010年VOA慢速英语(十)月
By Scott Stearns White House 22 February 2007 U.S. President George Bush wants to cut America's dependence on foreign oil by increasing the domestic production of alternative fuels. VOA White House Correspondent Scott Stearns has the story. President
2007年VOA标准英语（二月）
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)
You start with a liquid containing some kind of sugar, add yeast, and wait. The yeast digests the sugar, giving off alcohol in the process. The sugar in beer comes mostly from a grain called barley. With wine, the sugar usually comes from grapes. Eit
英语时差8，16
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）
Lexington 莱克星顿 Paying fealty to farmers 向农民们表忠 When Ted Cruz is the only person talking sense, something is wrong 当只有特德克鲁兹在理时，事情就有鬼了。 A FEW years ago, while reporting on the madness that is Eu
经济学人财经系列
By Brian Padden Iowa 17 July 2006 watch Ethanol report Harvesting corn to make alternative fuel Oil prices recently reached a record high of $75 a barrel. And the growing profits are funding such anti-American governments as Iran and Venezuela. Thes
2006年VOA标准英语（七月）
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）