标签：atmosphere 相关文章
The Earth's Biggest Threat 地球危机──温室效应 by Levi King Global warming was once considered unlikely to be real. Recently, though, it has become widely accepted as fact. Scientists have calculated that the earth's atmosphere has gotten
常春藤解析英语
Christmas is a festive time, especially for children. Families gather to celebrate the holidays with delicious meals and wrapped gifts. But for children whose families have no home of their own, Christmas can be a sad time. To put a smile on homeless
VOA标准英语2010年(十二)月
a great deal about 许多关于 astronaut 宇航员 atmosphere 大气层 billion 10亿 by the time 到时 distant 遥远的 eagle eye 鹰眼 Endeavour 奋进 号 faulty 有错误的 galaxy 星系 grab 抓 Hubble 哈勃 launch 发射 robot-arm 机器手
新概念英语第二册单词MP3
今天我们要学的词是 curtail. Curtail 做为动词，有缩减的意思。Technology companies, who have traditionally adopted a hands-off policy, are now struggling to curtail online offensive speech. 传统上往往采取不干预政策的高科
英语单词荟萃
今天我们要学的词是recycling。 Recycling, 意思是回收。随着近年来人们环保意识的加强， Recycling has come a long way, 废物回收也取得了显著进展。 为了庆祝星期四的世界地球日四十周年， There wil
英语单词荟萃
Study: Upper-Atmosphere Particles Slow Pace of Global Warming A recent study finds tiny particles suspended high in Earths atmosphere are having a greater impact on global climate than previously believed. The airborne particles, known as aerosols, a
VOA标准英语2011年(八月)
By Jessica Berman Washington 19 November 2009 A new study has found that oceans are struggling to help regulate climate as more carbon dioxide, a leading greenhouse gas, is pumped into the atmosphere. The ocean absorbs more than one-quarter of all o
VOA标准英语2009年(十一月)
Well,no one could survive without water.But you see pollution has been making more and more water unable for drinking. Yeah.Water pollution has for a long time been a major concern among the environmental issues. But what are the sources of water pol
英语口语900句
Blockson's computer model reveals that at the South Atlantic Anomaly, the magnetic field isn't just weaker than anywhere else on the planet. It's actually reversed polarity. There is a patch on the core in the South Atlantic where things are not poin
自然百科2011年
Cassini has solved the mystery of how at least one of Saturn rails' formed, and this may help solve the bigger mystery of life beyond Earth, * may be the hottest ticket in town, but don't overlook the heavy weight container for the titan lovemoon wit
自然百科2012年
So was this a near miss for us? If the asteroid had been in a different part of its orbit, so it didnt hit this year but it hit next year, it would have still hit us on February 15th. But instead of coming in over Russia, it would have come in over t
探索与发现2014年
On June 30th, 1908, a huge explosion tore through the forest of Tunguska, Siberia. It was 20 years before the Russians mounted an expedition to the site. What they found astonished them. 60 million trees across an area the size of London had been lev
探索与发现2014年
Amazing images. But what can you get out of these asan expert? What it shows us, first of all, is a great record ofthe entry of the object into the Earths atmosphere. So you see it right fromthe moment it really penetrated. And there it is. That is t
探索与发现2014年
In the four decades since our robots first arrived, the once fuzzy ball at the end of our telescopes has steadily focused into a red planet we can understand, and it is not a welcoming place. The problem is the atmosphere is so thin and cold that wat
自然百科2012年
By Mike O'Sullivan Los Angeles 17 April 2008 Two American scientists, James Galloway and Harold Mooney, have won this year's Tyler Prize for environmental achievement. VOA's Mike O'Sullivan spoke with the winners about their work, and about the state
VOA常速英语2008年（四月）
By Jessica Berman Washington 19 March 2008 For the first time ever, astronomers using the Hubble space telescope have discovered the presence of the organic molecule methane in the atmosphere around a planet outside our solar system. While astronomer
VOA标准英语2008年（三月）
NASA Readies Lunar Mission, Invites International Participation 美国宇航局欲邀请国际参与月球任务 The U.S. space agency is launching a mission to study the moon from NASA's Wallops Flight Facility in Virginia on September 7 around 0330
VOA常速英语2013年(九月)
Africa Kicks-up A Lot of Dust 非洲大陆的灰尘飘向美国 Bits and pieces of the African continent are falling on the United States and surrounding regions much of the year. Scientists say large amounts of African dust may be having major effec
VOA常速英语2013年(九月)
Before we take this giant leap, we need to be able to carry everything needed for a three-year -round trip with us. This is a much larger effort than getting to the moon. Its the Apollo mission on steroids. At this point we know at least as much as t
自然百科2012年
By Luke Hunt Tawau, Malaysia 01 October 2009 Haze has returned to Southeast Asia as fires set to clear farm land race out of control in Indonesia. Haze covers Pontianak city on Indonesia's Borneo island, 09 Sep 2009 The haze has enveloped large swat
VOA标准英语2009年(十月)