标签：surface 相关文章
Since early times, people have been fascinated with the idea of life existing somewhere else besides earth. Until recently, scientists believed that life on other planets was just a hopeful dream. But now they are beginning to locate places where lif
英语听力小短文走遍全世界
This is a genuine iron meteorite, this is believed to have once been part of the core of a long dead planet or asteroid, and this was found right here in this strewn field, this remarkable little shapes, indentations on the surface are called thumbpr
探索与发现2014年
Lesson19 The Dead Sea Throughout history people all over the world have gone to special places where mineral-rich hot springs flow from beneath the earth@s surface. Countries with much volcanic activity such as Japan have many such hot springs and ha
背诵为王第四册
AS IT IS 2016-10-02 Meltwater Lakes in Antarctica Show Signs of Trouble 南极洲或因融水湖增多而不断瓦解 Antarctica is home to the largest ice mass on Earth. The continent sits on 14 million square kilometers of rock. About 98 percent of
2016年VOA慢速英语(十)月
Hoverboards Ignore Gravity Can you imagine riding around the streets of your hometown on a skateboard without wheels? In the late 1980s, film director Robert Zemeckis showed a skateboard floating above the ground in his movie Back To The Future Part
2014年VOA慢速英语(十二)月
Lesson 89 Clouds And Rain 第89课 云和雨 Each of us drinks about three pints of fresh water every day, and we use a great deal of water for washing, for cooking, and for other purposes. 我们每个人每一天都会饮用3品脱左右的淡水, 而
英国学生科学读本
The planet's rotation twists the air as it flows, helping form the hurricanes that lash the coasts. As moist air wells upwards, clouds become electrically charged and send lightning bolts crushing down to the earth, superheating the air to eighteen t
探索与发现2014年
Using science as a guide, we attempt to recreate the final moments of the dinosaurs. 我们以科学为指引，试图重建恐龙的最后时刻。 The first effect was the impact itself. 第一个效果是撞击本身。 So when a 10-kilometer diam
侏罗纪搏击俱乐部
When we say there is a backup on the freeway, 当我们说高速公路上出现了阻塞的时候， we mean that the cars are moving very slowly or they're stopped, usually because there's an accident, 我们是说车子移动得非常缓慢或车子停
ESL杰夫的一天
Part6Noise Pollution 噪音污染 Noise is among the most pervasive pollutants today. Noise from road traffic, jet planes, jet skis, garbage trucks, construction equipment, manufacturing processes, lawn mowers, leaf blowers, and boom boxes, to name a fe
CRI实用英语课堂
Section 45 Swimming etc. The crawl, the backstroke, the breathstoke and the butterfly, what are these? They are the different strokes we can use when swimming. There are others, but these are the main
英语导读1000句
By Lisa Schlein Geneva 31 October 2007 The World Meteorological Organization says theLa Niaweather event is under way across the central and eastern equatorial Pacific and these conditions are expected to continue through the first quarter of 2008. L
2007年VOA常速英语（十月）
Why do golf balls have dimples(酒窝, 涟漪)?So that they look cute? NO! Because the dimples maximize the distance golf balls travel. Dimpled balls travel up to four times farther than smooth-surfac
奥运英语
Lesson 40 Getting or Expressing Opinions 第40课 征求表达意见 A:Excuse me. Can I have one fifteen-cent stamp and two eighty-cent stamps? A：打扰了，我想买一张15美分的和两张80美分的邮票。 B:I'm sorry. Fifteen-cent stamps h
新概念英语口语宝典第一册
And in fact, Curiosity -- which has been roving on the surface now for about three years -- 事实上，好奇号探测车，在火星表面上漫游已经有三年了 has really shown us that it's sitting in an ancient river bed, where water flowed
TED演讲科学篇
Todd: So one very popular conspiracy theory is the moon hoax. Jonathan: Yes, that's always a very funny one to hear people talk about. They saw this one program on Fox which had five or six points which look so impressive, you know, when you've got t
原版英语对话1000个
NASA's twin Stereo spacecrafts called Behind and Ahead captured rare footage of the Sun erupting over about a 30 hour period between September 26th and 27th. From the Behind perspective on the left, the long filament, darker than the Sun's surface, c
自然百科2009年
Cars And Lightning You may have heard that your car is a safe place to be in a thunder storm, and this is true. You might not know the reason for this, however.Well learn exactly what would happen if lightning struck your car. At first you might thin
英语时差8，16
In contrast, Jupiter and Saturn are all atmosphere. Unlike Earth, Jupiter doesnt really have a solid surface that you could stand on and then have your head up in the atmosphere looking at the clouds. Its just a giant, giant gas ball. Only one other
探索与发现2014年
Our chemistry, our very nature, our metabolism is completely shaped by the atmosphere. To appreciate our atmosphere, well rise through its layers, travelling from the planets surface, miles up above mountains and the clouds, to the very edge of space
探索与发现2014年