单词：freezing-point-of-metal cell
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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
VOA2003（下）-环境与健康
Old Fashioned Ice Cream Makers Have you ever seen an old-fashioned ice cream maker? Nestled inside the wooden bucket, theres a metal canister with a hand crank on top. Cranking the handle scrapes the sweet, creamy mixture from the sides of the metal
英语听力文摘 English Digest
[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
Stroll through the frozen foods section of the supermarket and youll find frozen corn, peas, and beans. A Moment of Science wonders, why isnt there any frozen lettuce? 你在闲逛超市的冷冻食品区的时候，会看到有冷冻玉米、冷冻豌
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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
Why Lettuce Should NOT Be Frozen Stroll through the frozen foods section of the supermarket and youll find frozen corn, peas, and beans. A Moment of Science wonders, why isnt there any frozen lettuce? 图片1 Why Cant I Freeze Lettuce? Freezing is a
英语听力文摘 English Digest
中文 英文 缩写 蜂窝技术工业协会 Cellular Technology Industry Association CTIA 蜂窝鉴权和语音加密运算法则 Cellular Authentication & Voice Encryption algorithm CAVE 蜂窝式网
电信英语
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）
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）
Scientists Point to Possible Health Effects of Cell Phones This past May, in a major policy shift, the World Health Organization said electromagnetic fields produced by mobile phones are possibly carcinogenic. Although the International Association f
VOA标准英语2011年(八月)
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
Have you ever seen an old-fashioned ice cream maker? Nestled inside a wooden bucket, there's a metal canister with a hand crank on top. Cranking the handle scrapes the sweet, creamy mixture from the sides of the metal canister, which sits in a bath o
英语听力文摘 English Digest
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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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