单词：Caushy's theorem
单词：Caushy's theorem 相关文章
By Nico Colombant Dakar 31 July 2006 In West Africa's Sahel region, which has had poor rain over the past few decades, scientists and human rights activists are hard at work trying to combat some of the many negative effects of desertification - the
2006年VOA标准英语（七月）
By Parke Brewer Washington, D.C. 30 April 2007 These are the opening weeks of the 2007 Major League Baseball season, and by this time next year fans in the nation's capital will be watching their team in a brand new stadium. VOA Sports Editor Parke B
2007年VOA标准英语（四月）
By Alisha Ryu Nyeri, Kenya 22 May 2006 Jack Githae, herbal doctor, is standing next to a young MUIRI tree at his clinic in Nyeri, Kenya For thousands of years, people living around Mount Kenya in the
2006年VOA标准英语（五月）
By Phuong Tran Dakar 13 February 2007 Even in African countries with overall low HIV infection rates, sex workers are many more times likely to carry the virus. In this second part of a five-part series on the most vulnerable groups to HIV infection
2007年VOA标准英语（二月）
By Scott Bobb Johannesburg 24 March 2008 Campaigning in Zimbabwe is peaking as voters prepare to go to the polls Saturdayto elect a president, national assembly, senate, and local leaders. Correspondent Scott Bobb takes a look at the candidates and s
VOA标准英语2008年（三月）
By Phuong Tran Dakar 23 February 2007 Filmmakers, fans and critics are preparing to attend one of Africa's largest film festivals known as FESPACO. As theaters are shutting down across Africa, the festival in Ouagadougou, Burkina Faso opening this S
2007年VOA标准英语（二月）
Man's Africa Trek Saves Pristine Forests Michael Fay calls himself a nature boy. Hes made a career of exploring the globe in the name of environmental protection, sponsored by organizations like National Geographic and the Wildlife Conservation Socie
VOA标准英语2012年(一月)
Rising Youth Unemployment Endangers Africa's Stability One example is Ahmet Toure of Senegal who has never had a job. Toure makes his living buying second-hand jeans from flea markets around Dakar. Toure repairs and retailors them to sell them for a
VOA标准英语2012年(七月)
Lack of Civility Hampers S. Africa's Sanitation Efforts Lucky Manyisi inspects his jurisdiction, as he calls it. Diepsloot, section 1: its laughing school children enjoying their summer break, its makeshift shacks, its unpaved roads where pointy rock
VOA标准英语2013年(一月)
before Barack Obama became president, he was a community organizer on Chicago's south side Long before Barack Obama came to Washington as a U.S. senator, then won election as the first African-American president of the United States, he was a communi
VOA标准英语2010年(二月)
Africa's Bright, Dark Economic Spots Get Attention As the International Monetary Fund (IMF) and World Bank spring meetings kick off in Washington this week, Africa's economies are the talk of both guarded optimism and cause for concern. Since the mid
VOA标准英语2011年(四月)
Baltimore's Empty Lots Bloom With Healthy Greens This one stretch of land is blooming in the midst of a post-industrial wasteland that has lost about one-third of its population since its post-World War II peak, leaving hollowed-out neighborhoods of
VOA标准英语2013年(五月)
DACA, A Student's Story: 'They Are The Types Of Immigrants You Want In Your Country' MICHEL MARTIN, HOST: Recently, we heard from a young immigrant from Mexico - the country from which the vast majority of DACA recipients arrived. Some 79 percent are
2017年NPR美国国家公共电台9月
SCOTT SIMON, HOST: About a quarter of a million DREAMers - young people covered by DACA, the Deferred Action for Childhood Arrivals - are enrolled in college this fall. DACA has permitted about 800,000 of these undocumented immigrants who are brought
2017年NPR美国国家公共电台9月
By Cindy Saine Washington 05 June 2008 African Americans are reacting with pride to Senator Barack Obama's becoming the first person of color to be the presumptive presidential nominee of a major U.S. political party. For some though, the joy is mix
VOA标准英语2008年（六月）
By Scott Bobb Johannesburg 07 December 2006 South Africa is marking the 10th anniversary (Dec. 10) of the signing of its constitution that formalized the demise of apartheid and the beginning of democratic rule. The charter has been described as one
2006年VOA标准英语（十二月）
By Terry Fitzpatrick Cape Town 13 June 2007 The World Economic Forum for Africa has opened its annual meeting to mixed news about the state of business on the continent. Africa is experiencing its greatest growth since the 1970s, but it isn't growing
2007年VOA标准英语（六月）
By Liu Enming Smithfield, Virginia 11 June 2007 Genuine Smithfield hams have graced dinner tables in the U.S. since nearly the settlement of the nation itself. VOA's Liu Enming recently traveled to the self-proclaimed Ham Capital of the World, Smithf
2007年VOA标准英语（六月）
Cement is a major component of concrete, the world's most widely used man-made material, an integral part of roads, bridges and buildings. But making cement requires heating limestone and other materials to very high temperatures, a process that rele
VOA标准英语2010年(一月)