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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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第二章 淋巴系统 Chapter 2 Lymphatic System accessory spleen 副脾 anterior cervical lymph node 颈前淋巴结 anterior mediastinal lymph node 纵隔前淋巴结 apical lymph node 尖淋巴结 axillary lumph node 腋淋巴结 bronchopulmonary lumph node 支气管肺淋巴结

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Imagine that youre an insect, and that youve fallen ill because some bacteria or parasites have invaded your body. If you want to make it to a ripe old bug age, your body will need to fight off these invaders. 想象一下，假如你是一只小昆虫

国家地理-2008-05-24 Fuel Cell 聚焦燃料电池

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

英语听力文摘 English Digest 632 昆虫是如何对抗细菌和寄生虫的？

How Insects Fight Bacteria And Parasites Imagine that youre an insect, and that youve fallen ill because some bacteria or parasites have invaded your body. If you want to make it to a ripe old bug age, your body will need to fight off these invaders.

英语博客：Basic Pronunciation Practice 15.

At the clinic: Doctor: So, how have you been getting along with this arm? Liz: Fine. I can get around alright, but it has definitely slowed me down. Doctor: Have you had any pain? Liz: At first I had some at night, but that only lasted a few days. Do

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Google: AI Found Breast Cancer with 99 Percent Accuracy Google says it is deeply involved in developing artificial intelligence, or AI, to help doctors identify and treat disease. The company previously announced successful tests of machine learning

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2007年VOA标准英语-Too Much Cell Phone Use May Cause Hearing Loss

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

Breast Cancer Study Could Change How Early Growths Are Treat

This is the VOA Special English Health Report. Have you ever felt lumps under the skin on the sides of your neck when you were sick? Those might be lymph nodes. They can get swollen and painful but their job is to fight infection. Lymph nodes are par

VOA标准英语2008年-Cell Phones Allow Countries to 'Leapfrog' Techn

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

美国国家公共电台 NPR She Survived Breast Cancer, But Says A Treatment Side Effect 'Almost Killed' Her

DAVID GREENE, HOST: All right, now more on a disease that maybe you've never heard of. It's called lymphedema. It can occur whenever lymph nodes are removed to stop the spread of cancer, and it's most common among breast cancer patients. NPR's Patti

VOA常速英语2007-Conference Says Stem Cell Research is Robust

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

VOA常速英语2008年-FCC Approves Cell Phone Alert System

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

Researchers make sperm from stem cell in dish

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

Turn Off Your Cell Phone 关掉你的手机

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

生活百态：为什么转圈时会头晕

What makes people dizzy when they spin? Rolling down a hill or spinning around in endless circles causes dizziness or vertigo because hair-like sensory nerve cells in our ears send wrong messages to our brain. The motions of our bodies are detected b

【英音模仿秀】气候问题仍严峻 全球城市齐努力

模仿文本： The problems of climate change remain of course, but with Kyoto, Copenhagen and the other international conferences failing to cement worldwide accords, the focus has rather switched elsewhere, and some of it to world's cities. They a

U.S. researchers discover human lung stem cell

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

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Still, though her surgery was successful, she notes that it was an isolating experience. 尽管她的手术很成功，但她表示这是一次孤独的经历。 Even though your family is there for you and cares for you, it becomes a solitary journe