单词:heterocyclyl ethylation
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This is the VOA Special English Agriculture Report. Recycling programs usually give new life to materials like paper, metal, plastic and glass. But a program in the eastern United States is recycling shellfish to help the Chesapeake Bay. Oysters are
AS IT IS 2014-05-25 Scientists Search for New Ways to Stop Mosquitoes 科学家们寻找新的方法来对付蚊子 The sound of a mosquito can mean trouble in many parts of the world. The bite of a mosquito can be deadly. Today, we will hear about s
美科学家研发新一代驱蚊剂 In many regions of the world, mosquitoes are a seasonal pest. In other regions, they carry serious diseases like malaria. The World Health Organization estimates that almost 630,000 people died of malaria-related
A South Korean official says North Koreas leader commented that he is committed to denuclearization of the Korean Peninsula. National security advisor Chung Eui-yong also said that the leaders of North and South Korea are to meet in the capital of No
THE MAKING OF A NATION - February 14, 2002: Inauguration of Franklin Roosevelt By David Jarmul VOICE 1: THE MAKING OF A NATION -- a program in Special English by the Voice of America. (Theme) American
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
By Scott Bobb Johannesburg 24 April 2007 Simone Chivale, 30, walks towards a destroyed home, in the Mozambique coastal town of Vilankulo, 24 Apr 2007 Relief officials in Madagascar have begun airlifting emergency food supplies to northern Madagascar,
The International Organization for Migration says dozens of health workers are providing primary health care and other essential medical assistance to thousands of victims of Cyclone Nargis, which struck Burma in early May. Lisa Schlein reports for
Promising Mosquito Repellent Announced美科学家研发新一代驱蚊剂 In many regions of the world, mosquitoes are a seasonal pest. In other regions, they carry serious diseases like malaria. The World Health Organization estimates that almost 6
One Police stops on police vehicle outside one Victoria's Bar. After the preparation, as necessary arrests?, this liquor drive slightly mixes. Suddenly he sees to have a young people shakely goes out from bar, spend the many figures only then finds
By Al Pessin Pentagon 27 November 2007 The U.S. military is providing hundreds of tons of relief supplies to victims of the cyclone in Bangladesh, much of it using a warship and helicopters sent to the region last week from duty in the Middle East. V
In the United States, the fastest growing type of trash is e-waste: computers, TVs and other electronics. Because many e-waste components are toxic, many communities are striving to recycle them more responsibly. From Boulder, Colorado, Shelley Schl
By David Gollust State Department 07 May 2008 The senior U.S. diplomat in Burma said Wednesday the death toll from the cyclone that hit the southeast Asian country late last week could exceed 100,000. Secretary of State Condoleezza Rice meawnhile say
On its website, a history of the company makes no mention of leador indeed of Thomas Midgleybut simply refers to the original product as containing a certain combination of chemicals. 在它的网站上,公司的历史没有提及铅──也没有提
By counting back through these layers and measuring the amount of lead in each, he could work out global lead concentrations at any time for hundreds, or even thousands, of years. The notion became the foundation of ice core studies, on which much mo
Lead is a neurotoxin. Get too much of it and you can irreparably damage the brain and central nervous system. Among the many symptoms associated with overexposure are blindness, insomnia, kidney failure, hearing loss, cancer, palsies, and convulsions
BEIJING, May 9 (Xinhua) -- The State Council, China's cabinet, said on Wednesday that the country will step up efforts to promote informatization development and strengthen information security. Speeding up the construction of informatization and bui
Ben je jezelf weer verloren Alles wat er van je wordt verlangd Je lijkt je aan de stilte te storen En wat ik ook zend het lijkt alsof jij het niet ontvangt Of wil je liever niet weten Voor welk ding echt jij je ogen sluit Ben je domweg vergeten Om te
If you were going to a restaurant and wanted a healthier option, 如果你去饭店,你想吃得健康一点, which would you choose, grilled or fried chicken? 你会选择哪种食品呢,烤鸡还是炸鸡? Now most people would answer grill