单词：fundamental group of a topological space
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This is Mars on Earth, a station that was built to help us learn how to live on the red planet. A group of explorers and NASA scientists are spending the next two weeks inside this habitat, trying to figure out how people will live on Mars. The NASA
自然百科2008年
AS IT IS 2013-10-29 Race May Be Issue in Next South Africa Elections种族议题左右南非选举 From VOA Learning English, welcome to As It Is! Im Steve Ember. On our program today, we tell about new political movements in South Africa, and how ra
2013年VOA慢速英语(十)月
Citizen-Scientists Take Control of Old Satellite 平民科学家控制旧卫星 For the first time, the American space agency has given control of one of its spacecraft to a team of citizen-scientists. The satellite was launched in 1978 and had not b
2014年VOA慢速英语(九)月
Underground Station in Capital to Become Arts Center 资本运作令旧车站成为艺术中心 The Dupont Circle park in Washington DC is a busy, crowded place. Popular restaurants and businesses around the circle attract many city residents and vis
2015年VOA慢速英语(八)月
This is Whats Trending Today... The United States named 12 new astronauts this week. The astronauts will work for NASA, the American space agency. The astronaut class of 2017 includes doctors, scientists, engineers, pilots and military officers. Seve
2017年VOA慢速英语(六)月
By Deepak Dobhal Washington, DC 07 December 2006 watch New Space Station Astronaut When the space shuttle Discovery rockets into space on Thursday, onboard will be a new crewmember for the International Space Station -- Sunita Williams. The 41 year
2006年VOA标准英语（十二月）
President Obama's latest nominee to the US Supreme Court, Elena Kagan, says she's grateful for what she called the honor of a lifetime. Mr. Obama says he chose Kagan in part because she understands that law is not an intellectual exercise, a thought
2010年NPR美国国家公共电台5月
1. President Bush says the failure of North Korea's long-range missile doesn't diminish his goal to deal with the country's nuclear program. The president said the launches make the communist nation e
美联社新闻一分钟2006
By VOA News 12 February 2008 Astronauts from the space shuttle Atlantis are formally opening the new laboratory at the International Space Station Tuesday. Crew members set up electrical and data lines linking the new Columbus laboratory to the stati
VOA常速英语2008年（二月）
Cash Mobs Help Local Businesses and the Economy Welcome to American Mosaic from VOA Learning English. Im Onka Dekker. Today, we play new music from British soprano Sarah Brightman that was inspired by her upcoming space trip. We also learn how some C
2013年VOA慢速英语(六)月
New York City Announces Plan to Retrain Police 纽约宣布重新培训警察的计划 New York City says it is planning to retrain its police force. Mayor Bill de Blasio announced the retraining of the citys 20,000-member police force Thursday. He s
2014年VOA慢速英语(十二)月
克服恐惧 Visualize a positive outcome. 使一个积极的结果视觉化。 With practice, we can create just enoughspace between our fearful thoughts and the emotion of fear so that we're able to replace a fearful thought with a positive one. We
英语听力广播—Listening
模仿文本：Welcome to Four Thought. Glass is all around us. Now here, of course, this is the BBC, we're in a dark basement underneath Somerset House. Perhaps because glass is transparent, because sometimes it appears as if it's not there at all.
英音模仿秀
By Kane Farabaugh New York City 19 March 2007 watch Richard Branson report Richard Branson sits on the top-ten list of the United Kingdom's richest citizens, with an estimated wealth of roughly eight billion dollars. As the company he founded -- Vir
2007年VOA标准英语（三月）
拓扑排序 topological sort 偏序 partical order 拓扑有序 topological order AOV网 activity on vertex network AOE网 activity on edge network 关键路径 critical path 匹配 matching 最大匹配
实用英语
The geriatrician will intervene late in the day, 老年医学医生会在一个人老化过程的后段， when pathology is becoming evident, 病理越来越明显的时候， and the geriatrician will try and hold back the sands of time, 做治疗来
TED演讲科学篇
HARI SREENIVASAN: Today's decision on marriage sent waves of reaction across the country, beginning with a large crowd gathered on the Supreme Court steps. Political director Lisa Desjardins takes us there. LISA DESJARDINS: This is the decision from
PBS访谈社会系列
今天我们要学的词是crew。Crew指一个工作团队的全体成员。比如，flight crew机组成员。美国航空航天局表示，The next crew to launch towards the International Space Station will make the trip faster than any other gro
英语单词荟萃
Hello and Welcome to News and Reports on China Radio International. In This Edition UN Secretary-General Ban Ki-moon says he's confident about South Sudan obtaining membership in the UN. Thailand's prime minister-elect says, she cannot avoid the fact
2011CRI中国国际广播电台