单词：polymethylmethacrylate (pmma)
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This is Scientific Americans 60-Second Science. Im Cynthia Graber. This will just take a minute. Saliva contains many useful components: lubricants, enzymes for breaking down food and now compounds that can reveal a persons age. Thats according to a
Scientific American(六)月
AGRICULTURE REPORT - Restrictions on Methyl Bromide By Mario Ritter Broadcast: Tuesday, March 16, 2004 This is Steve Ember with the VOA Special English Agriculture Report. Graphic Image Some chemicals
农业与发展
By Carol Pearson Washington 04 July 2007 Researchers have found that chocolate dark chocolate is good for your heart. They say it may stave off hardening of the arteries among smokers, and it has more antioxidants per gram than red wine, green tea or
2007年VOA标准英语（七月）
By David Gollust State Department 24 October 2007 Secretary of State Condoleezza Rice is warning Arab politics could become more radical unless the current window of opportunity for Israeli-Palestinian peacemaking is fully exploited. At a congression
2007年VOA常速英语（十月）
AUDIE CORNISH, HOST: This is what pillow talk on television sounds like these days. (SOUNDBITE OF TV SHOW, I LOVE DICK) KATHRYN HAHN: (As Chris) Why do you think that we are - have been monogamous all these years when we don't even believe in it? Lik
2017年NPR美国国家公共电台5月
Science and Technology Epigenetics and stress Baby blues 科技 外因遗传与压力 新生儿蓝调曲 A mother's stress while she is pregnant can have a long-lasting effect on her children's genes 母亲孕期压力过大会对孩子的基因造成长
经济学人科技系列
Students at the University of Canterbury had only one and a half days of classes before the earthquake on Feb 22nd. The university then closed for three weeks. A number of buildings had red stickers, including the two newest buildings Commerce and La
新西兰英语
MADRID, Feb. 2 (Xinhua) -- Spanish Prime Minister Mariano Rajoy on Saturday denied that he and other members of his Popular Party (PP) had received illegal cash payments hidden from tax authorities. The accusations were false, Rajoy said at the PP he
英语新闻
Joining us now is reporter Tang Bo to tell us more about the measures the Chinese government has taken to cope with the air pollution. Tang: Poor air quality in Beijing and the Beijing cough has repeatedly embarrassed the country in the international
CCTV9英语新闻2013年11月
HELSINKI, June 22 (Xinhua) -- Finnish President Tarja Halonen on Tuesday appointed（约定的,指定的） Mari Kiviniemi, new leader of the ruling Center Party, as the country's prime minister. Kiviniemi, 41, replaced her predecessor(前任) Matti
英语新闻
In the latest campaign against terrorists and extremists, Xinjiang police have shot dead nine suspects and captured one in Hotan prefecture. Local authorities say more than 30,000 civilians joined in the manhunt. In the latest campaign against terror
CCTV9英语新闻2014年08月
By Deborah Tate Capitol Hill 10 September 2007 Six years after the September 11th terrorist attacks on the United States, Bush administration officials say Islamic extremist groups, and al-Qaida in particular, continue to pose a threat to the United
2007年VOA标准英语（九月）
By Ron Corben Bangkok 19 May 2007 Burma's ruling military appears to have appointed another top-ranking general to take over the duties of the country's ailing prime minister. As Ron Corben reports from Bangkok, regional analysts say the move is not
2007年VOA标准英语（五月）
BEIJING, Jan. 29 (Xinhua) -- China's meteorological authority has introduced a new weather warning system for smog which will use readings of PM 2.5, a particle pollutant. The announcement comes as thick haze chokes many cities. The National Meteorol
英语新闻
WASHINGTON, Jan. 3 (Xinhua) -- U.S. President Barack Obama has signed a fiscal cliff bill into law that raises tax rates for the wealthiest Americans and extends tax cuts for most of the U.S. households, the White House said early Thursday. Obama sig
英语新闻
Obama meets Bulgarian PM at White House
英语新闻
BEIRUT, Jan. 2 (Xinhua) -- A hand grenade(手榴弹) was tossed late Saturday night at the residence of the son of former Lebanese（黎巴嫩） Prime Minister Omar Karami, an ally of Shiite armed group Hezbollah. Unidentified assailants tossed a ha
英语新闻
Japan's parliament is meeting to formally name Yukio Hatoyama as the next prime minister. His Democratic Party of Japan won a huge poll victory last month, ending more than 50 years of almost unbroken rule by the Liberal Democratic Party. Prime Mini
英语新闻
RAMALLAH, Feb. 13 (Xinhua) -- Palestinian Prime Minister Salam Fayyad will resign Monday to open the door for reshuffling（改组） his West Bank-based government, sources said Sunday. The sources told Xinhua that Fayyad would form and lead the new
英语新闻
Italian Prime Minister Mario Monti met with party leaders Saturday to build support for his proposed austerity measures as European leaders work to confront the continent's debt crisis. The government has not officially released details of the measur
英语新闻