单词：spectrally opponent cell
单词：spectrally opponent cell 相关文章
By Caty Weaver Broadcast: July 25, 2003 This is Bill White with the VOA Special English Environment Report. Researchers say they have found a way to reduce the cost of some 1)fuel cell production. The
VOA2003（下）-环境与健康
[00:02.61]English Express [00:20.25]Taekwondo [00:21.17]跆拳道 [00:39.77]Taekwondo is a traditional Korean martial art, [00:42.83]meaning the way of kicking and striking. [00:51.40]martial [00:52.38]战争的, 军事的, 尚武的 [00:55.07]柔道、
英国文化—oral english
For something that could revolutionize the world, its come along very slowly. The fuel cell was invented in 1839, but there was little development until the 1950s when NASA started to use them in space where they are still used today. Now, after yea
国家地理2008年
Greg took the pen out of his pants pocket. He took his keys out of his pants pocket. He took his cell phone out of his pants pocket. He took his wallet out of his pants pocket. He put everything into a plastic tray. He took his shoes off. Greg was at
超级简单英语阅读
By Carol Pearson Washington 25 September 2007 A lot of people wonder about the impact cell phones might have on their health. And now a new study shows that heavy mobile, or cell, phone use may result in hearing loss. VOA's Carol Pearson reports. As
2007年VOA标准英语（九月）
By Bill Rodgers Washington 19 May 2008 Cell phones are an example of what is sometimes now called leapfrog technology, a product that allows developing nations the benefits of a reliable and extensive communications network without the heavy investme
VOA标准英语2008年（五月）
Discovery Could Lead to New Drugs to Block Deadly Viruses Viruses are strange things. Though there is some scientific question about whether viruses are alive or not, they do have a basic genetic structure that allows them to be biologically active.
VOA标准英语2013年(三月)
By Victoria Cavaliere New York 16 October 2007 An annual stem cell research conference in New York has been bringing together some of the field's top scientists to discuss breakthroughs in stem cell research and what proponents call its long-term app
2007年VOA常速英语（十月）
By Parke Brewer Berlin 08 July 2006 Few would have thought the French could make it to the final here, after they played to draws in their two opening group matches, and were at risk of bowing out of the tournament until a 2-0 win over Togo. ----- F
2006年VOA标准英语（七月）
By Paul Sisco Washington 17 April 2008 Federal regulators in Washington have approved plans to upgrade the nation's Emergency Alert System to include text messages to cellphones and other mobile devices. VOA's Paul Sisco has more in this Searching fo
VOA常速英语2008年（四月）
WASHINGTON, Aug. 4 (Xinhua) -- Researchers have found a way to turn mouse embryonic stem cells into sperm and this finding opens up new avenues for infertility research and treatment, according to astudy published Thursday in the online edition of jo
英语新闻
Turn Off Your Cell Phone 关掉你的手机 We went to the movie the other night. I sat in an aisle seat as I usually do, because it feels a little roomier. Just as the feature was about to start, a blonde from the center of the row got up and starte
趣味英语
LONDON, Aug. 11 (Xinhua) -- Defending Olympic champion Zou Shiming of China outscored Kaeo Pongprayoon from Thailand 13-10 to defend his Olympic gold at London Olympics here on Saturday. Zou, who edged the Irish fighter Paddy Barnes in Friday's semif
英语新闻
By Jessica Berman Washington 19 December 2007 Stem cell research was the major medical and science story this past year, topping the list of achievements that experts say might finally lead to cures for many diseases. Meanwhile, global health officia
VOA常速英语2007年（十二月）
COPENHAGEN, April 13 (Xinhua) -- Denmark's Caroline Wozniacki advanced to the semifinals of the Copenhagen WTA tournament after beating Alice Cornet of France 6-0, 6-3 in the quarterfinals here on Friday. Top-seed Wozniacki showed her strength and fo
英语新闻
Sometimes your biggest weakness can become your biggest strength. Take, for example, the story of one 10-year-old boy who decided to study judo despite the fact that he had lost his left arm in a devastating car accident. The boy began lessons with a
求职英语
WASHINGTON, May 11 (Xinhua) -- Researchers at Brigham and Women 's Hospital (BWH), a teaching affiliate of Harvard Medical School, have identified(鉴定) a human lung stem cell that is self-renewing and capable of forming and integrating multiple bi
英语新闻
麻将牌：mah-jong, mah-jongg 棋牌室：Chess Poker Room 筒子：the circle tiles 索子：the bamboo tiles 万子：the character tiles 番子：the honor tiles 花牌：flower tiles 上：claiming a tile to match a sequence 碰：claiming a ti
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