单词：cation cell
单词：cation 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
很久不见的好友Lisa, Karen和Gina一起吃饭。三个人都说，现在手头很紧，彼此交换勤俭持家的经验。Gina说，她们家实行三十天规则，想买什么东西，先要等上三十天，如果三十天过后还觉得需要
礼节美语
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）
1. Top officials of Standand Poor's are defending their decision to degrade the US government's credit rating. White House claims that it was a hasty decision based on faulty math, but the SP says it was reasoned conclusion. 2. More than 20 elite Nav
美联社新闻一分钟2011(八月)
Education Report - United Nations Report Urges Putting Education to Work From VOA Learning English, this is the Education Report in Special English. A new United Nations report says over two hundred million young people in developing countries have n
2012年VOA慢速英语(十)月
High tech gadgets such as cell phones are bringing profound change to developing nations, and not just economic progress. Text messaging, the Internet and other innovations are having wide ranging social repercussions, from exposing human rights abu
VOA标准英语2008年（七月）
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）
很久不见的好友Lisa, Karen和Gina一起吃饭。三个人都说，现在手头很紧，彼此交换勤俭持家的经验。Gina说，她们家实行三十天规则，想买什么东西，先要等上三十天，如果三十天过后还觉得需要
商务礼节美语
国庆长假一直是旅游旺季，热门景区都是人山人海；加上高速公路免收通行费，许多有车一族选择自驾游，在高速上打起了羽毛球。这个国庆，要么在景区哭，要么在家里笑，你选哪一样？ 国
美国文化脱口秀
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
病假 sick leave; sickness pay; sick pay 带薪休假 paid leave 销假 return to work; back to work 病休表 sickness absence form 员工近亲过世请的假 Bereavement leave; compassionate leave 通常是在员工近亲属去世的时候请的假
实用英语
至少要平静 Keep calm at least When you had fallen to the bottom of your life, every people around you would tell you: Be hard-bitten and be happy! 在你跌入人生谷底的时候，你身旁所有的人都告诉你：要坚强，而且要快乐。
实用英语
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
有些流行用法书本上没有，但老外日常生活中却正在使用。小编帮你搜罗了这10个，赶快学起来吧！ 1. meh: 还行，一般，相当于shrug的口语版（可自行脑补老外耸肩的动作） The film was a bit meh.
英语口语