标签：sediment 相关文章
I Wish I Could believe by C. Day Lewis The best lack all conviction, While the worst are full of passionate intesity. Those two lines of Yeats for me sum up the matter as it stands today when the very currency of belief seems debased. I was brought u
英语励志美文精华
Houston is an industrial city, central to the nation's oil and gas industry, and home to one of the busiest ports in the country. It's also home to more than a dozen of the 41 superfund sites in Texas. Those are areas contaminated with toxic waste th
PBS访谈环境系列
Dinosaur Death Leads to Rise of Fish 恐龙死亡导致鱼类增多 Tens of millions of years ago, an asteroid hit what is now the Yucatan Peninsula of Mexico. The event led to a global mass extinction that has been linked to the end of the dinosaurs
2015年VOA慢速英语(七)月
Scientists Discover New Animal 科学家发现新的物种 From VOA Learning English, this is SCIENCE IN THE NEWS. Im June Simms. And Im Bob Doughty. Today we tell about a new animal species native to South America. We tell how agricultural chemical
2013年VOA慢速英语(八)月
Great Barrier Reef Choking on Pollutants 大堡礁遭遇前所未有的污染 Attempts to protect the Great Barrier Reef are failing. A report released Monday by the government in Australia says water quality in the Great Barrier Reef is far below wh
2015年VOA慢速英语(十)月
Small Organisms in Deep Sea Rocks Eat Methane 深海岩中的微生物吃甲烷 The gas methane has been linked to rising temperatures on Earth. But methane does not stay in the atmosphere as long as another greenhouse gas -- carbon dioxide. Scientis
2014年VOA慢速英语(十)月
This is Scientific Ameican 60 second Science, I'm Cynthia Graber, this will just take a minute! Cave painting connects us with our prehistoric artist ancestors. But there's a dearth of such illustration in the Americas. Now a cave in Brazil has been
Scientific American(二)月
Cave painting connects us with our prehistoric artist ancestors. But there's a dearth of such illustration in the Americas. Now a cave in Brazil has been found to house the oldest New World image known. The shelter was excavated from 2002 to 2009. In
Scientific American(二)月
What was around the bend in rivers hundreds of millions of years ago? Its a trick questionbecause there werent any bends. Ancient rivers were typically just wide, sheetlike flows of water. New reports in the journals Geology and Earth-Science Reviews
Scientific American(一)月
(WA) One reason oceanographers analyze the sediment on the ocean floor is to see how long-terms changes in Earth's temperature have affected the depth of the ocean. By analyzing the remains of sea animals in old layers of ocean sediment, oceanograph
托福听力短文
Many Life Forms Discovered Deep under Antarctic Ice 南极冰层下发现许多形式的生命 Scientists from the United States say they have found fish and other aquatic creatures living under icy waters in Antarctica. They made the announcement af
2015年VOA慢速英语(三)月
Ocean Floor Reveals Past Climate Changes Time capsule Lamont research professor Maureen Raymo, the director of the Core Repository, slides open a long, narrow drawer from the cabinet. Like thousands of others here, the drawer contains a long, thin cy
VOA标准英语2012年(一月)
Very quietly I take my leave As quietly as I came here; Quietly I wave good-bye To the rosy clouds in the western sky. The golden willows by the riverside Are young brides in the setting sun; Their re
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Science and Technology Palaeontology Do the locomotion 科技 古生物学 活动活动 The earliest animal tracks yet found have been unearthed in Canada 在加拿大出土了迄今为止发现的最早动物足迹 ONE of the greatest mysteries of t
经济学人科技系列
The twilight zone refers to the area between 100 and 1000 metres deep where a small amount of sunlight can still penetrate. The region is packed with ocean life that plays a key role in keeping atmospheric carbon-dioxide levels 30-percent lower than
英语新闻
生活英语：解读葡萄酒瓶上的标签 Vintage. This is actually the first thing we look for ourselves. You don't need to have a vintage chart in your pocket or care whether 2001 or 2002 was a better year in the Sierra Foothills. The vast majo
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21 Life Goes On 第二十一章 生命在前进 It isn't easy to become a fossil. 要变成化石可不容易。 The fate of nearly all living organismsover 99.9 percent of themis to compost down to nothingness. 几乎所有的生物其中的99.9%以上
万物简史
如何在托福阅读中提取句子的主干?这样即抓住了阅读的重点，也节省了阅读时间。有些同学对于分析长难句并不是那么敏感，看到句子简化题可能就会有晕头转向的感觉，在这里给大家讲解一
托福英语
That explained where all the sediment went. It was being returned to the bowels of the Earth. It also explained why ocean floors everywhere were so comparatively youthful. None had ever been found to be older than about 175 million years, which was a
万物简史
近来在所接触到的考生当中，绝大部分都是准备到海外读语言、预科或是对雅思分数要求不高的准大学留学生。在他们身上都有着一个共同的特点，那就是时间比较紧迫且对雅思分数要求并不
托福英语