Stephen Hawking on Black Holes

By their very definition,black holes are 1) objects which are not supposed to 2) emit anything .It therefore seemed that the area of the 3) event horizon of a black hole could not be regarded as its 4

各大品牌英文介绍 Avon

Avon is the worlds largest cosmetics and perfume company. Its also one of the oldest. It was founded in New York in 1886 by a door-to-door book salesman David H. McConnell who gave away perfume to encourage sales. The perfume became more popular than

VOA标准英语2012--Social Media Drives Publicity in Trayvon Martin Case

Social Media Drives Publicity in Trayvon Martin Case Across the United States, African Americans mobilized in memory of 17-year-old Trayvon Martin, and in protest over the fact that the man who shot him had initially avoided criminal charges. Early o

非洲第一夫人为女性创造变革机会

First Ladies in Africa Creating Change for Women Last month, The Washington Post published an opinion piece about reports that the United States government had separated 2,000 children from their parents. The writer was Laura Bush, wife of former U.S

TED演讲:我们能在打造人工智能的同时掌握控制权吗?(4)

It's crucial to realize that the rate of progress doesn't matter, because any progress is enough to get us into the end zone. 我们要知道这个进程的速度并不重要，因为任何进程都足够让我们走进死胡同。 We don't need Moor

万花筒 2013-07-21&07-25 奥巴马就Trayvon Martin枪击案发表讲话

Without warning today, president Obama decided to blow open the argument about race and bias in America, calling on the nation to do some soul searching, and six days after the verdict getting personal, he said he could have been Trayvon Martin. Afte

英语歌曲:Travis--colder~~

Travis--colder~~ i'm in love with everything with every face i've ever seen and every place i've ever been has left its mark upon my worries i color in the world i see i pick apart the melody 'cause maybe there's a symphony caught inside but there's

VOA标准英语2009-Afghan Corruption Concerns US Policy Planner

By Gary Thomas Washington, D.C 17 November 2009 Afghanistan President Hamid Karzai has been roundly criticized in the international community for presiding over a corrupt government. A new report reinforces the perception of widespread corruption in

美国国家公共电台 NPR Ahead Of Revival, 'Gilmore Girls' Fans Descend On The 'Real' Stars Hollow

Ahead Of Revival, 'Gilmore Girls' Fans Descend On The 'Real' Stars Hollow play pause stop mute unmute max volume 00:0002:53repeat repeat off Update Required To play the media you will need to either update your browser to a recent version or update y

TED演讲:为什么油水不能混合(1)

Why does salt dissolve in water but oil doesn't? 为什么盐可溶于水而油却不行呢？ Well, in a word,chemistry. But that's not very satisfied, isn't it? 总的来说，是化学作用。但这并不令人满意，对吧？ Well, the reason

词汇大师-- Centuries Later, the Bard of Avon

RS: I'm Rosanne Skirble with Avi Arditti, and this week on Wordmaster: Shakespeare in American English. This is the seventy-fifth anniversary year of the Folger Shakespeare Library, home to the largest collection of Shakespeare materials in the world

万物简史 第159期:爱因斯坦的宇宙(2)

In 1875, when a young German in Kiel named Max Planck was deciding whether to devote his life to mathematics or to physics, he was urged most heartily not to choose physics because the breakthroughs had all been made there. The coming century, he was

Volkswagen 2010 sales in China up 37 pct

SHANGHAI, Jan. 7 (Xinhua) -- Europe's largest carmaker, Volkswagen AG（大众汽车公司）, said Friday that it had sold 37 percent more vehicles on the Chinese mainland and Hong Kong in 2010, compared to sales in 2009. With 1.92 million vehicles

美国国家公共电台 NPR How Sen. Orrin Hatch Shaped America's Health Care In Controversial Ways

STEVE INSKEEP, HOST: The arrival of the new Congress means the retirement of Utah Senator Orrin Hatch. NOEL KING, HOST: Hatch was elected 42 years ago in 1976, when Gerald Ford was president. Presidents have come and gone since then - seven president

经济学人:六大经济思想之五:纳什均衡(上)

Economics brief: six big ideas. 经济概要：六大经济思想。 Game theory: Prison breakthrough 博弈论：越狱 The fifth of our series on seminal economic ideas looks at the Nash equilibrium. 六大经济思想之五纳什均衡。 JOHN NAS

PBS高端访谈:到底是什么造成巴黎的恐怖袭击?

WILLIAM BRANGHAM: The Islamic State in Iraq and Syria, known as ISIS, has claimed credit for Friday's terrorist attack in Paris. And the French government also blames the Islamic militant group. Peter Neumann studies and teaches terrorism and radical

PBS高端访谈:是什么导致欧洲穆斯林主义变成了极端主义?

JUDY WOODRUFF: The New York Times reported late today that one of the brothers being hunted for the Paris attack received training at an al-Qaida training camp in Yemen. This is according to a senior American official. The brothers, who were born and

PBS高端访谈:为什么德国监督机构未能阻止柏林袭击的嫌犯?

HARI SREENIVASAN: Anis Amri, the man suspected of carrying out Monday's attack on a Berlin Christmas market, was well known to German authorities. He was under surveillance for six months this year and was slated for deportation. But his home country