单词:stokes stimulated emission
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STEVE INSKEEP, HOST: National law enforcement officials have had an awkward few days. You see, they're part of President Trump's administration. And last week in a speech, the president asked police to be a little rougher with criminal suspects. The
Targeted To Teens, A German Play About ISIS Stokes Fear, Teaching Opportunities play pause stop mute unmute max volume 00:0004:11repeat repeat off Update Required To play the media you will need to either update your browser to a recent version or up
EXPLORATIONS - The History of the Laser Welcome to EXPLORATIONS in VOA Special English. Im Mario Ritter. This week, we tell about one of the most recognizable objects in science fiction the laser. It is one of the best examples of how technology can
Syria Conflict Stokes Calls for Global Arms Treaty Last February in Homs, Syria, photojournalist Paul Conroy witnessed his colleague, Sunday Times writer Marie Colvin, killed in a rocket attack. Conroy has now joined activists with the Control Arms C
A MARTINEZ, HOST: Out in California where some conservatives are getting tired of feeling like outsiders. Their dream - to live among like-minded neighbors in Republican-leaning places. As NPR's Vanessa Romo reports, some are choosing Texas. VANESSA
This is Scientific American 60 Second Science, I am Karen Hopkin, this will just take a minute. Every year, about 10 million tons of paper winds up in American landfills and incinerators, which is not only wasteful but adds CO2 to the atmosphere. Rec
The History of the Laser Welcome to EXPLORATIONS in VOA Special English. Im Mario Ritter. This week, we tell about one of the most recognizable objects in science fiction the laser. It is one of the best examples of how technology can go from the sci
Opposition to offshore drilling grows even though oil slick is still far from Florida Brian Wagner | Key Largo, Florida 14 May 2010 The gulf oil spill is still hundreds of kilometers from Florida, but local businesses worry about the impact it could
Small lifestyle changes make big difference for planet Rosanne Skirble | Washington, DC 16 February 2010 The Stokes from Falls Church, Virginia, say what they are doing is right for the planet and the pocketbook. Watch: Skirble Report MP4 Related Lin
Russian nationalists in Crimea have burned Ukrainian history textbooks to protest what they say are distortions of the past by the administration of former President Viktor Yushchenko. The recent transfer of power in Kyiv has raised hope among Russia
Yemen Instability Stokes Terror Concerns Thousands of people took to the streets in cities across Yemen Friday, calling for President Ali Abdullah Saleh to be put on trial. Saleh signed an accord on Wednesday to surrender power after 33 years of rule
Japan raised the severity of the Fukushima nuclear crisis from four to five on a seven-point scale of international nuclear events. Fears of radiation exposure has caused a run on salt products all across the region, including in China, where shopper
Exhibit at Berlin Jewish Museum Stokes Debate The exhibit at Berlins Jewish museum seeks to answer frequently asked questions about Jews. Are all Jews religious? What makes food Kosher? What do Jews wear on their heads and why? And who can become a J
BBC Learning English London Life The English-Speaking Union Awards Callum:Hello, I'm Callum Robertson and this is London Life. One of the most famous buildings in London is Buckingham Palace and perhaps London's most famous residents are the Royal F
By Nancy-Amelia Collins Bali, Indonesia 13 December 2007 The head of the United Nations Climate Change Conference is warning that a deadlock between the United States and the European Union over greenhouse gas emission targets may derail the conferen
Welcome to EXPLORATIONS in VOA Special English. Im Mario Ritter. This week, we tell about one of the most recognizable objects in science fiction the laser. It is one of the best examples of how technology can go from the science of the future to eve
Breaking up is hard to do. Whether youre doing the dumping or getting dumped, chances are you feel pretty upset. And theres a scientific explanation for this. 分手确实是件难事。无论是你甩了对方,还是对方甩了你,你都可能感
BEIJING, April 14 (Xinhuanet) -- Computer sales declined in the first three months of this year for the first time since 2009 worldwide. PC sales fell 1.1 percent in the first quarter to 84.3 million worldwide, according to tech research firm Gartner
KELLY MCEVERS, HOST: The dangers of obesity are well known. The dangers of carrying a little extra weight, though, are the subject of more debate. NPR's Patti Neighmond reports that a new study published this week in the Annals of Internal Medicine s
Central banking can be agonising. The effect of monetary policy on the economy is not immediate, 中央银行可能很痛苦。货币政策对经济的影响并非即刻见效, so decisions must be based on expectations for two years' time. That me