单词：mantle cell
单词：mantle cell 相关文章
Cross Words: Dare to Contest with Me? The crossword puzzle was an early 20th century invention. A 1) craze like the 2) Charleston that quickly invaded the popular culture. But even newspaper editors t
疯狂英语2003年
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
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）
生活大爆炸第四季第七集_1 剧情简介： The Big Bang Theory是一部以科学天才为背景的情景喜剧.四位科学天才分别是:可爱善解人意的Leonard,高智商零情商的Sheldon,会六国语言的 Howard Wolowitz,以及患有
生活大爆炸第四季
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）
The RiddleOnce upon a time... A King's son once had a great desire to travel through the world, so he started off, taking no one with him but one trusty servant. One day he came to a great forest, and as evening drew on he could find no shelter, and
英美文化
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
HANGZHOU, Feb. 21 (Xinhua) -- Lin-sanity, Lin-credible and Linderella are just a few of the words used to describe the frenzy surrounding Jeremy Lin, a New York Knicks point guard whose inspiring story has made him a new idol for young Chinese after
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
那天晚上，警察在离我们家约50英里远的地方发现了汽车残骸和受伤的绑匪。在审讯的时候，开车的绑匪说当时转向是为了避开一个高个子的金发男人。二十年过去了，从来没有人宣布曾经救过
英语美文
那天晚上，警察在离我们家约50英里远的地方发现了汽车残骸和受伤的绑匪。在审讯的时候，开车的绑匪说当时转向是为了避开一个高个子的金发男人。二十年过去了，从来没有人宣布曾经救过
英语美文
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
Do you have a trophy room? This is a place where you keep your various trophies , certificates, award plaques, autographed trinkets and other things that remind you of past accomplishments. This could be a fireplace mantle, space on a bookshelf, a do
阅读空间
托福阅读的文章，都有自己的背景，关于托福阅读背景，有的是移民背景，有的是工业革命背景，而在托福考试中，我的托福阅读背景是经常出现的，这些经常出现的托福阅读背景，就是我们
托福英语