英语励志美文精华 46

Life Grows in the Soil of Time by Thomas Mann What I believe, what I value most, is transitoriness. But is not transitoriness - the perishableness of life - something very sad? No! It is the very soul of existence. It imparts value, dignity, interest

Horizon - Life On Mars 火星生命 - 7

Rice had seen the same thing in Iceland, one of the few places on Earth with similarities to Mars. It too is extremely cold, and most of the water is frozen into glaciers. And also like Mars, buried u

VOA慢速英语2003年-农业与经济 Soil Conservation Meth

By Gary Garriott Broadcast: July 29, 2003 This is Bill White with the VOA Special English Agriculture Report. Soil conservation efforts protect soil from wind and water that can blow or wash it away.

VOA慢速英语2009-Agriculture Report - In the Garden, Making t

This is the VOA Special English Agriculture Report. Mulch is material spread over soil. It protects against wind and rain damage. It can also limit weed growth. Finding materials for organic mulch can be easy. Small pieces of tree bark or cut up lea

万物简史 第481期:多灾多难的生命进程(1)

22 Good-bye To All That 第二十二章 多灾多难的生命进程 When you consider it from a human perspective, and clearly it would be difficult for us to do otherwise, life is an odd thing. 要是你从人的角度去考虑生命这个问题，显

That arn computer well is important.

本讲为2006年下半年新的教学内容，请对照讲义听声音！ Students(researcher/scholar) of Nature are not satisfied with guessing, but they observe, day after day, the changes which tak

Mars Rover to Begin Taking Soil Samples This Week

Mars Rover to Begin Taking Soil Samples This Week Jessica Berman NASA engineers say the Mars rover will begin taking its first soil samples as soon as it departs the landing platform . Engineers say t

VOA慢速英语2014 飞船历史性的在彗星上着陆

Young Technology Expert Works to Stop Car Thefts Kenya is East Africas largest economy. Its capital Nairobi is growing quickly. But so is the citys crime rate -- the Nairobi Metropolitan Crime Observatory says thieves steal an average of 10 cars each

VOA慢速英语2014 气候变化会使非洲农场受重创

AS IT IS 2014-10-21 Climate Change Could Destroy Farms in Africa 气候变化会使非洲农场受重创 A new study says the speed and severity of climate change could cause major damage to small African farms. These farmers are already struggling t

VOA标准英语2012--Tests Show Levels of Arsenic in US Rice

Tests Show Levels of Arsenic in US Rice Two hundred different types of rice and rice products tested by both the non-profit research group, Consumer Reports, and the U.S. Food and Drug Administration [FDA], contained varying levels of different forms

TED演讲:怎样选择适合你的防晒霜(1)

Sunscreen comes in many forms, each with its own impacts on your body and the environment. 防晒霜有很多种，每种对你的身体和环境影响各有不同。 With so many options, how do you choose which sunscreen is best for you? 有了这么

李克强总理鼓励科技创新

Premier Li Keqiang says China should consider science and technology as a primary productive force. Scientific and technological innovation to a large extent determines the future of China's development strategy. In history, we have missed several te

生活大爆炸第一季第十三集_2：The Bat Jar Conjecture

-Sheldon：Leonard, excellent. I want to show you something. excellent：太好了 Leonard太好了，我想让你看点东西。 -Leonard：Can it wait? I need to talk to you. 能等一会吗，我们得谈谈。 -Sheldon：Just look. I've designed

万物简史 第471期:生命在前进(13)

Sprigg submitted a paper to Nature, but it was turned down. 斯普里格给《自然》杂志写了一篇论文，但是没有被采用。 He read it instead at the next annual meeting of the Australian and New Zealand Association for the Advancement

万物简史 第132期:基本物质(4)

Although chemistry had come a long way in the century that separated Newton and Boyle from Scheele and Priestley and Henry Cavendish, it still had a long way to go. Right up to the closing years of the eighteenth century (and in Priestley's case a li

上海科学家研发防水耐火纸 有助纸质文物保存

In January 2015, a fire in one of Russia's largest university libraries damaged more than 1 million historical documents, an incident which some media described as a cultural Chernobyl. 2015年1月，俄罗斯最大的大学图书馆之一发生了火灾

CCTV9英语新闻：2013北京空气质量没有改善

Despite pledges in the last year to fight pollution, Beijing saw barely any improvement in air quality in 2013. The Beijing Environmental Protection Bureau says the intensity of major air pollutants remained much the same in 2013 as they were in the

康宁发布第五代Gorilla Glass玻璃 手机屏幕将更耐摔

Dropping your smartphone when taking a selfie could soon be less risky, says specialist glass maker Corning. 专业玻璃制造商康宁日前表示，自拍的时候不慎掉落手机可能不再会碎屏了。 Shattered or cracked screens are the n

万物简史 第219期:把铅撵出去(8)

Finally, and perhaps a little unexpectedly, readings can be thrown out by seemingly unrelated external factorssuch as the diets of those whose bones are being tested. One recent case involved the long-running debate over whether syphilis originated i

Sweet Bait Lures Malaria Mosquitoes

Israeli(以色列) researchers say they have developed a powerful bait that effectively attracts and kills malaria-infected mosquitoes but is completely harmless to humans and other animals. The toxic sugar bait developed by scientists at Hebrew Univ