标签：derived 相关文章
The global trade in precious stones is a multi-billion dollar business. It touches the lives of people in the mines of South Africa, stone cutters of India, and countless others around the world. These precious gems adorn, kings, queens, movie stars
VOA标准英语2008年（九月）
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）
A new study of a popular dietary supplement indicates that, while pine bark extract is safe, it has no significant effect on blood pressure or other risk factors for heart disease. This new research seems to contradict evidence from earlier studies.
VOA标准英语2010年(十)月
SCOTT SIMON, HOST: George Moses Horton published a book of poetry in 1829, when he was still a slave in North Carolina. He went on to write several volumes, which never earned enough money for him to buy his freedom. He was finally set free by the Un
2017年NPR美国国家公共电台10月
By Tendai Maphosa London 31 March 2008 Britain is stepping up the use of biofuels with new targets in the coming weeks - as the first step toward meeting an EU directive that five percent of all transport fuels come from renewable energy sources by t
VOA标准英语2008年（三月）
President Obama has lifted restrictions on the use of federal money for research using embryonic stem cells. Some researchers are already making progress using stem cells from umbilical cord blood, which entails no controversy since there is no dest
VOA标准英语2009年(三月)
By Michael Bowman Washington 07 June 2007 Scientists in the United States say they have for the first time been able to create stem cells from the ordinary skin cells of mice, a breakthrough that could lead to new medical breakthroughs and eliminate
2007年VOA标准英语（六月）
A survey conducted in predominantly Muslim nations shows an overall embrace of globalization, trade, and integration into the world economy. From Washington, VOA's Michael Bowman reports. For those who view Muslims as generally insular, inward-looki
VOA标准英语2008年（八月）
The first cuts of US beef with bones have arrived in South Korea since they were banned nearly five years ago. As VOA's Kurt Achin reports from Seoul, massive street protests over US beef have calmed, but anger over an import resumption deal remains
VOA标准英语2008年（七月）
New York Gallery Displays Modern Middle Eastern Calligraphy Middle Eastern calligraphy on display at a New York City art gallery is being touted as a vehicle for dialogue between the Middle East, including Iran, and the West. The works of art are rec
VOA标准英语2011年(十一月)
Thailand's central bank hopes to help the country's beleaguered exporters by allowing more investment overseas part of a strategy to cheapen the Thai baht. Thailand market analysts doubt the plan will offer much respite from the global economic slum
VOA标准英语2009年(八月)
Sahel Attacks Prompt Fears in France Over Energy Supply Since the 1970s, much of Frances energy supply has derived from the Sahel region of Africa. So recent attacks on Western commercial interests there have big implications, says energy economist M
VOA标准英语2013年(六月)
Liberians Living in US Struggle From Afar as Ebola Ravages Homeland The more than 8,000 Liberians in New York City the largest concentration outside Liberia itself struggle from afar as the Ebola virus ravages their homeland. Most Liberian immigrants
VOA标准英语2014年(十月)
Global Initiative Unveils Six-Year Plan to Eradicate Polio A new campaign has been announced to eradicate polio. The six-year plan costing $5.5 billion was unveiled Thursday at the Global Vaccine Summit in Abu Dhabi. The Global Polio Initiative says
VOA标准英语2013年(四月)
Parma Food Producers Worry About Impact of Imitations 帕尔玛食品生产商担心受山寨产品影响 Food producers in the Emilia-Romagna region of northern Italy are worried that cheap imitations of their famous Parmigiano-Reggiano cheese and P
VOA标准英语2015年(三月)
Thailand's central bank hopes to help the country's beleaguered exporters by allowing more investment overseas part of a strategy to cheapen the Thai baht. Thailand market analysts doubt the plan will offer much respite from the global economic slump
VOA双语新闻 2009年8月
By Phil Mercer Sydney 18 May 2007 A team of Australian malaria experts has been meeting in Canberra to find the most efficient ways to combat the disease in the South Pacific. Canberra has just announced a new multi-million dollar aid package to help
2007年VOA标准英语（五月）
By Carolyn Weaver Kampala, Uganda 03 May 2006 watch Drug Resistance report Anti-microbial resistance -- germs becoming resistant to medicine -- is part of the natural history of infectious disease. No
2006年VOA标准英语（五月）
By Steve Herman New Delhi 03 March 2007 On Sunday India heralds the arrival of spring with the festival of Holi. While Holi is a Hindu ritual, it is celebrated with bonfires and parties by Indians of all religions. But one aspect of Holi is prompting
2007年VOA标准英语（三月）
The Most Successful Species on Earth 地球上最成功的物种 For many scientists, a species success is measured by sheer numbers. In that case, the most successful species known to man is a type of bacterium known as S-A-R-11, or SAR-11 for short
英语听力文摘 English Digest