单词：cell reproduction
[网络] 细胞增殖；细胞分裂
单词：cell reproduction 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
executive coke cling clearing universally temperament ferrous conceive customary cartridge set rip second dwell flake instrumental reproduction goddess displacement vicinity patent
用Mp3背六级单词
This is scientific American's science 60 second science, I am steve mosbyA lot of people have had compacted third molars. Third molars produce chronic pain. Allen man, a Princeton University Physical anthopolegist, the annual meeting of the immagrate
Scientific American(二)月
A lot of people have had impacted third molars. Third molars produce a lot of chronic pain. Alan Mann, a Prinston University physical anthropologist at the annual meeting of the American Association for the Advancement of Science in Boston on Februar
Scientific American(二)月
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
Scientists Grow First Fully Developed Human Eggs in Laboratory For the first time ever, scientists have succeeded in growing human eggs from the earliest stages to full maturity in a laboratory. 科学家们有史以来首次在实验室将人类卵子
2018年VOA慢速英语(二)月
Researchers are trying to identify the reasons behind the poor population growth of some of Africas wild animals including the Grevy and Cape Mountain zebras. A major focus is the endangered black rhino. What weve done with the University of Manchest
VOA标准英语2018年(九月)
Egg Cells 卵细胞 Do you know what an egg cell is? 你知道什么是卵细胞吗？ An egg cell is necessary for reproduction. 卵细胞是繁殖的必要条件。 Animals have egg cells. 动物有卵细胞。 Then does every animal have egg cells
与美国小学生一起学英文第10册
VOICE ONE: This is SCIENCE IN THE NEWS, in VOA Special English. I'm Barbara Klein. VOICE TWO: And I'm Steve Ember. On our program this week, we will tell about an animal that can reproduce without mating. We also will tell about a Swedish man who d
VOA慢速英语2007年（六）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）
ISPs 网络服务提供者 CTR click through rate 点击率 hack tools/ cheating program 私服，外挂 SAM 软件资产管理 OD plants 光盘生产厂 OD exemplars 光盘模板 OD testing 光盘鉴定 collective management 集体管理 performing
英文语法词汇
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）
本期真题 1. Nancy is only a sort of ______ of her husband's opinion and has no ideas of her own. A) sample B) reproduction C) shadow D) echo 2. Now that spring is here, you can ______ these fur co
英文语法词汇
By Stephanie Ho Washington 08 January 2006 The inaugural exhibit at the new Loyola University Museum of Art in Chicago is raising questions about art and the value of copies of art. The show features
2006年VOA标准英语（一月）
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
Science and technology 科学技术 Human reproduction 人类繁衍 Life begins at 45 45岁也能生娃 Hope for older mothers 高龄母亲的福音 WHEN it comes to reproduction, men have it easy. 讲到繁衍，男人表示压力很小。 Almost to
经济学人科技系列
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
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
Although snails can and do successfully mate without stabbing each other, studies have shown that darted snails store one-hundred-sixteen percent more sperm than undarted snails.
英语时差8，16