单词：interdigitating cell
单词：interdigitating 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
A: What may I help you with? B: I need to file a complaint. A: What is your complaint about? B: I got robbed. A: When did this happen? B: It happened this morning. A: What was taken? B: My wallet and cell phone. A: Did you get a good look at the pers
英语情景对话-犯罪
A: What can I do for you? B: I would like to file a complaint. A: What happened? B: I was robbed. A: When did this happen? B: It happened this morning. A: What was taken from you? B: My wallet and my cell phone. A: Were you able to get a look at this
英语情景对话-犯罪
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
What Is Progeria? Progeria was first described in the nineteenth century. The mysterious disease is often thought of as premature aging. Children with progeria are normal for their first year of life, but then develop medical problems normally seen i
英语听力文摘 English Digest
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）
A: I came to this lab to have my blood drawn. B: You are in the right place. Roll up your left sleeve and have a seat. A: What am I being tested for? B: Your doctor wants to know what your white blood cell count is. A: What does my white blood cell c
英语情景对话-健康
a butterfly with glowing eyes Believe it or not, Monteiro and her team insert ed a new gene into the butterflys genetic sequenceone taken from a jellyfish . No, I know you're fooling. Actually I'm not. This gene codes for a green florescent protein t
英语听力文摘 English Digest
Why are there males and females? Why are there two sexes instead of three, or twelve, or one? On todayss Moment of Science we'll learn why two is the magic number. Let's start with why there is sex at all. When two organisms reproduce sexually, sperm
英语听力文摘 English Digest
Fish live in water, but do they drink it? The answer is yes, but how fish drink water depends on where they live. Water gets into a fish's body through osmosis, the process in which water diffuses from a higher to a lower concentration. For example,
英语听力文摘 English Digest
Under normal circumstances, each of your brain cells allows various substances, such as sodium, calcium and potassium to permeate its outer cell membrane. Once inside the brain cell, these substances help give the cell stimulus it needs to function p
英语听力文摘 English Digest
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
今天我们要学的词是nagging。 Nagging, 唠叨个没完没了的，搅得人不得安宁的。The tennis player decided to take the season off to take care of his nagging shoulder injury, 这个网球选手决定赛季停赛，彻底治好一直
英语每日一词
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
Topics: Alcatraz; The Simpsons; using negation with an infinitive; heaven versus heavens; kind of versus sort of versus type of Words: to escape guard jailbreak cover-up cell haunted animated dysfunctional family trouble-maker pacifier merchandise le
美语听力 English Cafe
How Cells Get Around 漫步的细胞 A major reason why many cancers are so dangerous is that they metastasize . This means that instead of staying in one place, the cancer cells migrate from their original site to other parts of the body. No wonder
英语听力文摘 English Digest
Topics: Types of prisons and the parole system; American cities: Austin; using prepositions with the days of the week; for the world to owe (one) something; late/early morning, afternoon, and evening Words: prison to pose a threat solitary confinemen
美语听力 English Cafe