单词：lymphokine-activated killer cell
单词：lymphokine-activated killer 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
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
Volcanic gases escape from the magma . They percolate through the earth crust and into the atmosphere. Professional geologist, Charles Watson, investigates the risks at Horseshoe Lake close to Mammoth's main resort. There is a quiet, silent killer th
国家地理2007年
In Vitro - experiments which are carried out in a laboratory as distinct from in vivo experiments In Vivo -experiments which are carried out in live animals as distinct from in vitro experiments Immun
医务英语
Insulin - an endochrine hormone produced in the spleen which controls the amount of sugar in the blood by a) transporting it into cells and promoting glycolysis b) converting it into glycogen for stor
医务英语
1. Condolence s came from the White House Friday to the U. S. Forest Service following the deaths of four firefighters in a California wildfire. The spokesman for the President said in a phone convers
美联社新闻一分钟2006
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）
This is the VOA Special English Health Report. How important is your mobile phone, better known to Americans as a cell phone? MAN: I use my phone all the time. I'm always on my phone. WOMAN: It's kind of pretty much important to me because it's like
2011年VOA慢速英语(三)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）
RACHEL MARTIN, HOST: Before Christopher Scott went to prison, he led a quiet life, spending as much time as possible with his sons. CHRISTOPHER SCOTT: In the place that I lived at, we had, like, a pond, so I used to take my two boys out and go feed t
2017年NPR美国国家公共电台11月
Larry在帮李华写一篇报告，因为李华的电脑出了问题，她写的整个报告都丢了。今天李华会学到两个常用语：back to square one和killer. LH: 电脑出了问题，我写
美国之音《流行美语》
Amygdala's Acidic Aspiration Answer A study in the journal Cell shows that the buildup of carbon dioxide when we stop breathing causes a pH change that signals proteins in the brain to force us to inhale. Karen Hopkin reports. Maybe its happened to y
60秒科学
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 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
NEW BATAAN, Philippines, Dec. 7 (Xinhua) -- Philippines President Benigno Aquino III on Friday ordered a probe into the high casualties of Typhoon Bopha (local name Pablo) as the death toll rose to almost 500 in southern Philippines. The Philippine p
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）
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
Why You Shouldn't Leave Nude Photos of Yourself on Your Cell Phone The 23-year-old woman lost her cell phone in a restaurant parking lot. By the next morning, someone was texting nude photos of her to everyone. As regular readers have learned many ti
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