单词：II-VI group solar cell
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(MA) So, you see, physical illness can have psychological causes. Now, we just have time to introduce another interesting example of the interaction between the mind and the body --- placebos. Placebos --- maybe you've heard them called sugar pills
托福听力短文
New Solar Cell Minimizes Environmental Risks in Manufacturing Process 新的太阳能电池减少生产中对环境的危害 Scientists in England report the development of a new solar cell that minimizes environmental risks in the manufacturing proc
VOA标准英语2014年(六月)
Daisy和Kathy听说同事Johnny戒烟，很替他高兴。Kathy问Johnny是怎么戒的。 K: What's worked so far? J: Well, for starters, I saw a doctor who specializes in helping people quit smoking. The doctor recommended a therapy group that meet
礼节美语
Unit 4 会议用语 小组会议 Group Meeting 预定会议室 book/ reserve a conference room A: Jennifer,could you book us a conference room? B: What time? A: 1:00 to 3:00 tomorrow afternoon. B: You are all set. 会议通知 call for meeting =notif
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From VOA Learning English, this is the Health Lifestyle report. If you have been meaning to add more exercise to your daily routine, you may want to start sooner rather than later. A 2018 study has found that a lifetime of regular exercise and activi
2018年VOA慢速英语(四)月
By Derek Kilner Nairobi 17 March 2008 The international organization Human Rights Watch says in a new report that much of the political and ethnic violence that followed Kenya's disputed presidential elections was methodically organized. The organiza
VOA标准英语2008年（三月）
Breaking news out of Taxas BigFoot is real according to a group of researchers.They call themselves the Sasquatch genome project and they released what they say is proof several never before seen short video clips of the legendary and very shy creatu
万花筒2013年
Todd: So, Santi are from Indonesia, correct? Santi: Yes. Todd: So, I take it, you can play sports all year round 'cause it's really warm? Santi: Yes. It's true. Todd: So, what kind of sports do you like to play? Santi: I like swimming and I like doin
原版英语对话1000个
Pictures Connect People for Earth Day 2013 From VOA Learning English, welcome to This Is America. I'm Kelly Jean Kelly. And I'm Mario Ritter. April twenty-second is Earth Day. Former United States Senator Gaylord Nelson started the observance in nine
2013年VOA慢速英语(五)月
Large Windows Could Capture Solar Energy 利用大窗户吸收太阳能 Solar cells have been around since the 1950s. But now there is a race to develop transparent solar cell that can cover windows of buildings and still capture the suns light for e
2016年VOA慢速英语(八)月
AS IT IS 2016-04-21 Belgium Believes More IS Recruits to Return to Europe 比利时怀疑更多伊斯兰国组织成员将返回欧洲 Officials in Belgium say they have evidence that members of the Islamic State group are looking to return to Europe
2016年VOA慢速英语(四)月
Paintable Solar Cells May Replace Silicon-Based Devices 可喷涂太阳能电池可能取代硅基电池板 Solar panels are manufactured in factories. Some of the devices are made with cadmium chloride, a substance shown to be harmful to human healt
2015年VOA慢速英语(十)月
There is a consensus among the delegates and world leaders attending the climate change conference in Copenhagen on the need to cut greenhouse gas emissions and shift to cleaner/more efficient energy. But a research center in Britain is espousing a d
VOA标准英语2009年(十二月)
By Deborah Tate Capitol Hill 15 March 2006 The U.S. Congress has commissioned a bipartisan panel to provide an independent assessment of the situation in Iraq. The panel's leaders say their group will
2006年VOA标准英语（三月）
By Paul Sisco Washington 22 October 2007 Twenty college and university teams from around the world competed inthe recentSolar Decathlon that is held every two years in Washington, D.C. The U.S. Energy Department sponsors the event, and this year's wi
2007年VOA常速英语（十月）
By Larry London Washington 17 December 2007 With five Number One hits between 1992 and 1997, the group Boyz II Men has secured a permanent place in music history. Through their wonderful harmonies and poetic lyrics, and a career that has spanned 20 y
VOA常速英语2007年（十二月）
PV solar technology is more complex. When sunlight hits a PV cell, electrons in the cell are knocked out of their orbits. Electric fields channel the electrons in a current used to generate electricity。 Unlike thermal solar panels, PV technology is
英语时差8，16
Everyone is familiar with the riddle: Which came first, the chicken or the egg? This sometimes leads to discussions about bird evolution. But most people dont realize this type of question is common in paleontology. For example: Which came first, the
英语时差8，16
Science and technology 科学技术 Flu vaccines and synthetic biology 流感病毒与合成生物学 Going viral 向病毒行进 A speedy way to make a vaccine 快速制造疫苗的方法 IF A new and deadly strain of influenza were to arise, puttin
经济学人科技系列
DAVID GREENE, HOST: America imprisons more people than any other nation. And for those who get released after a long sentence, re-entry can be tough, especially finding affordable, stable housing. Housing is often one of the biggest barriers to ex-in
2019年NPR美国国家公共电台1月