单词：chief cell
chief cell的用法和样例：
例句
- Chief cells make and secrete pepsinogen.主细胞制造和分泌胃蛋白酶原。
- Further investigation usingubiochemical methods are required to determine qualitatively and quantitatively theubstance of the cytoplasmic granules of the chief cells in SIDS.认为有必要进一步应用生化技术对婴儿急死综合征颈动脉体主细胞中致密颗粒物质进行定性和定量研究。
单词：chief 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
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By Barbara Dash Broacast: December 22, 2003 (THEME) ANNOUNCER: People in America -- a program in Special English by the Voice of America. Every week at this time, we tell the story of a man or a woman
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[ti:] [ar:] [al:] [by:] [00:01.00] Late At Night, Do You Turn Off Your Cell Phone? 今夜不关机 [00:08.22]Today, my friend asked me a question. [00:11.17]At night, do you turn off your cell phone? [00:14.78]If you dont, whom do you leave it on for
温馨夜读
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
The girl would turn her cell phone off and put it by her photo on the desk everynight befor going to bed. This habit had been with her ever since she bought the phone. The girl had a very close boyfriend,when they couldn't meet ,They would either cal
每天一点英文
NEW DELHI, Nov. 21 (Xinhua) -- Visiting chief of the United States Central Intelligence Agency (CIA) （(美国)中央情报局 ） Leon Panetta Saturday met Indian National Security Advisor M.K. Narayanan here to discuss terrorism in Pakistan and Afg
英语新闻
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）
PEOPLE IN AMERICA - One of the leaders of the Indian resistance, Apache chief Cochise VOICE ONE: PEOPLE IN AMERICA, a program in Special English on the Voice of America. (THEME) During the Eighteenth Century, Indians tried to halt the move of white s
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People in America - Chief Joseph, 1840-1904: A Great Nez Perce Indian Chief SHEP ONEAL: People in America -- a program in Special English by the Voice of America. Every week at this time, we tell the story of a man or a woman who played an important
2012年VOA慢速英语(四)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）
ECONOMICS REPORT - A New Chief for the Securities and Exchange Commission By Mario Ritter Broadcast: Friday, June 10, 2005 I'm Gwen Outen with the VOA Special English Economics Report. The Securities
健康与经济
IN THE NEWS - Hong Kong Chief Executive Tung Chee-hwa By Jerilyn Watson Broadcast: Saturday, March 05, 2005 Jerilyn Watson I'm Steve Ember with In the News, in VOA Special English. All week there was
教育与新闻
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
A blonde was being interviewed by the Chief of Police for an opening in the local Police Department. The chief said that before I hire you I have to ask a few questions. Chief: First how much is 1 and 1. Blonde ElevenChief: Well I guess I will accept
趣味英语
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
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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