Fuel Cell Cost-Cutting

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

TED演讲:美国人在健康问题上的共识是什么(2)

Now, it seemed that it shouldn't be so complicated to design a doctor's visit around what people actually need to be healthy. 现在，看起来设计个医生的访问去了解人们要保持健康需要什么并不复杂。 So I created Health Lead

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

TED演讲:医学的未来?也许是手机上的一个应用程序(5)

We use those in my field of bone marrow transplantation. 我们把这些干细胞用于骨髓移植领域。 Geron, just last year, started the first trial using human embryonic stem cells to treat spinal cord injuries. 杰龙去年开始第一次尝试

TED演讲：为什么健康的生活方式几乎把我害死(3)

I also tried to be the safest person I could be, because that's a part of health. 我还尽我所能做个最安全的人，因为这也是健康的一部分。 I was inspired by the Danish Safety Council. 我受到丹麦安全委员会的启发。 T

英语视频-TED演讲：塑造不可思议

建筑设计师们像自然借鉴灵感的创意比比皆是，比如著名的悉尼歌剧院，比如北京奥运会的主场馆鸟巢。可是你想象过，自然界的有丝分裂能带给设计师什么灵感吗？可不是什么长得像DNA一样

TED演讲:我在战火纷飞的加沙做报道(3)

In the tradition of the Palestinian society, it's forbidden for men to enter the household. 在传统的巴勒斯坦社会，禁止男人进入家门。 So, no male journalists get the story. But I did. 因此，没有男性记者能进行采访。但是

TED演讲：每天一秒钟(3)

You know, this project for me is a way for me to bridge that gap and remember everything that I've done. 这个项目对我而言，就是一座让我能够回忆起我过去生活的桥梁。 Even just this one second allows me to remember everythin

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

TED演讲:拥抱你的内心少女

Namaste. Good morning. 早上好！ I'm very happy to be here in India. 很高兴今天来到印度。 And I've been thinking a lot about what I have learned 过去的十一年，我带着《阴道独白》和V-Day运动， over these last particular

TED演讲:选择的困惑(5)

There is one corner, by the way, that I'm not going to tell anybody about, where the WiFi actually works. 但是，这个饭店里的确有一个地方可以无线上网。 I'm not telling you about it because I want to use it. 可我不会告诉你们

TED演讲:选择的困惑(2)

This is my supermarket. Not such a big one. I want to say just a word about salad dressing. 这是我家附近的一个超市。不算很大。我只想说说这里的色拉调料。 175 salad dressings in my supermarket, 我这家超市有175种各式

TED演讲:昭示长寿的实验(2)

Okay. 好了 So what is the daf-2 gene? 那么daf-2基因到底是什么？ Well as you know, genes, which are part of the DNA, 正如大家所知，基因是DNA的一部分 they're instructions to make a protein that does something. 它们是经编码

TED演讲之生与死:昭示长寿的实验(3)

So how can a hormone ultimately affect the rate of aging? 那么，激素到底是怎样影响衰老的速度呢？ How could that work? 原理是什么呢？ Well it turns out that in the daf-2 mutants, 原来在daf-2变异体中 a whole lot of gene

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

TED演讲 获奖青少年,科技在行动(5)

But those are dots on a screen for you; what exactly does that mean? 但是那些你们看起来是屏幕上的点；到底有什么意义呢？ Well basically that means that this protein is changing from the sensitive cell to the resistant cell. 基本

TED演讲：细菌是怎样交流的(3)

What was actually interesting to us was not that the bacteria made light, but when the bacteria made light. 事实上，我们感兴趣的部分并不是细菌会不会发光，而是细菌何时发光。 What we noticed is when the bacteria were alo

TED演讲：细菌是怎样交流的(1)

Bacteria are the oldest living organisms on the earth. 细菌是地球上最古老的生物。 They've been here for billions of years, and what they are are single-celled microscopic organisms. 它们已经存在数十亿年了，它们是单细胞微