标签：atmosphere 相关文章
MICHEL MARTIN, HOST: Mars is about to get a new visitor from Earth tomorrow. If all goes well, a NASA probe called InSight will land near the Martian equator. Its mission is to study the interior of the planet. But, before it can carry out its missio
2018年NPR美国国家公共电台11月
我们桂林有个像迪尼斯乐园的地方叫做乐满地。我带着孩子去玩呀，她可来劲了，又是坐海盗船，又是玩过山车，又是玩激流勇进，还居然敢去跳蹦极......晚上又参加了同学的生日派对，可算
英语早间课堂
THE PRESIDENT: Yesterday I had the opportunity to speak to President Uribe of Colombia, and he called to give me the good news that hostages had been rescued, including three Americans that had been held since 2003. I congratulated the President. I
美国总统每日发言
By Cindy Saine Washington 14 February 2008 The Defense Department says it is planning to shoot down a defunct U.S. spy satellite before it is expected to hit the Earth in early March, because of potential danger to human beings from its unburned rock
VOA常速英语2008年（二月）
AS IT IS 2013-06-14 NASA Scientists Still Dream of, and Plan for, Human Travel to Mars From VOA Learning English, this is As It Is. Welcome back. Im Caty Weaver. On the show today, we look into the future of space exploration. The American space agen
2013年VOA慢速英语(六)月
Scientists Say Climate Change Is Real and Human-Caused 科学家称气候变化是人类活动所造成 From VOA Learning English, this is Science in the News. Im Katherine Cole. And Im Christopher Cruise. Today we tell about a United Nations report
2014年VOA慢速英语(一)月
Study: Reducing Soot is Fastest Way to Slow Climate Change A new study finds that reducing carbon-rich soot emissions could be the fastest and most economical way to slow climate change and protect human health. Those dust-like particles released in
VOA标准英语2011年(九月)
Hubble's Gaze Extends to Edges of Universe Ever since the days of Galileo and the first optical telescopes more than 400 years ago, astronomers have been looking for ways to cast their gaze farther into the heavens around us. Today, thanks to the ear
VOA标准英语2011年(八月)
NASA's MAVEN Spacecraft Arrives at Mars 美国宇航局的Maven飞船到达火星 NASAs newest Mars probe, called MAVEN, has successfully entered its designated orbit around the red planet. Scientists will use its sophisticated instruments to try to
VOA标准英语2014年(九月)
Iran Talks Leave Issues Unresolved The delegates gathered in Kazakhstan amid hopes they would build on the upbeat atmosphere of the last round of talks there in February. Some believed there was a chance of agreement on first steps toward ending the
VOA标准英语2013年(四月)
Clouds, they are fluffy, white and full of mystery. Although scientist may have better handle on clouds, even they don't know at all. Because the new study can show that atmosphere gases can help clouds form in a way no one had ever considered. That'
Scientific American(二)月
By David McAlary Washington, DC 08 August 2006 watch Global Warming Overview Global Warming Searing summer temperatures are shattering records across much of the northern hemisphere. Some European nuclear power plants have cut output because river w
2006年VOA标准英语（八月）
There it is! Yep. Its about 90 kilometres up, at that stage, travelling at 17.5 kilometres per second. Using the different camera positions, scientists have pinpointed the exact position at which the meteor entered the atmosphere. And by tracking the
探索与发现2014年
Most of the damage from an explosion like this is actually the blast wave. Its the very high winds. Mark created a simulation to see what size an asteroid would need to be to be able to generate such destructive power. In this simulation I include mo
探索与发现2014年
Australia's vast native forests are storing three times as much carbon as previously thought and could hold the key to tackling climate change, according to a new study released Tuesday. It has found the eucalyptus forests of southeast Australia can
VOA标准英语2008年（八月）
The U.S. space agency NASA's Mars probe Phoenix has detected icy snow falling through the Martian atmosphere. The spacecraft has also discovered material in the planet's soil that is leading scientists a step closer in their conclusion that life pro
VOA标准英语2008年（十月）
It's a common enough sound in summer, after the wind finally picks up on a hot and humid afternoon, as the rain starts spattering down in big, fat drops--you're in for a full-blown thunderstorm. It's much less common in winter, even during a snow sto
英语听力文摘 English Digest
Reentry Heat [Why does a space shuttle get hotter on reentry than on liftoff?] 能想象航天飞机穿越大气层时受到摩擦产生的热量有多惊人吗？来一起听听吧。 M:Dolle,we now know that the space shuttle Columbia burned up whe
英语听力文摘 English Digest
Airplane Contrails Have you ever seen a perfectly cloudless sky? Cloudlessthat isexcept for two or three long white lines smeared across the perfect blue sky by airplanes like smudges on a pane of glass. Why do airplanes sometimes leave contrails beh
英语听力文摘 English Digest
A Fresh Breath of Methane 很早很早以前地球有很微量的氧气，而且地表状况十分恶劣。大气主要是N2和Co2，后来通过复杂的变化，地球开始出现了厌氧型生物。在生命的作用下，地球的氧气开始不断
英语听力文摘 English Digest