标签：marsha 相关文章

Journey to Mars

Callum: Hello and welcome to 6 Minute English, I'm Callum Robertson and with metoday is Kate, hello Kate. Kate: Hello Callum. Callum: Do you like going on business trips? Kate: Well I do quite like the idea of them but they're definitely no holiday.

发表于:2018-11-29 / 阅读(162) / 评论(0) 分类 六分钟英语

国家地理-2008-04-06 Mission to Mars 火星任务：巨大的心理考验

Cramped quarters, no privacy, and the stress of working together every day. Psychology, more than aerospace engineering, may be the key to sending human crews to Mars. This is Mars on Earth, a station that was built to help us learn how to live on t

发表于:2018-12-05 / 阅读(72) / 评论(0) 分类 国家地理2008年

Horizon - Life On Mars 火星生命 - 3

Conditions on Mars were so harsh that it was hard to imagine any life surviving there. The idea of sophisticated aliens was wiped out. We know that conditions on Mars today are not very good for life.

发表于:2018-12-07 / 阅读(77) / 评论(0) 分类 火星生命

Horizon - Life On Mars 火星生命 - 1

In 2001 a new NASA probe was launched. Called Odyssey, it was sent to Mars to carry out the most detailed analysis ever of the planet’s surface. What it has discovered may be about to answer one of

发表于:2018-12-07 / 阅读(66) / 评论(0) 分类 火星生命

Horizon - Life On Mars 火星生命 - 8

But even if there had been water, life doesn't start overnight. Even a simple microbe is the product of complex chemical systems that take millions of years to evolve. Had the water lasted long enough

发表于:2018-12-07 / 阅读(70) / 评论(0) 分类 火星生命

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

发表于:2018-12-07 / 阅读(80) / 评论(0) 分类 火星生命

Horizon - Life On Mars 火星生命 - 6

For Mars to have rivers, it must once have had streams, rain, clouds and an atmosphere, a planet just like the Earth today-if these were rivers. They had to be sure. The answers would come in 1998 wit

发表于:2018-12-07 / 阅读(93) / 评论(0) 分类 火星生命

国家地理:Is It Real? Life on Mars 火星生命

Believe it or not, astrobiologist Penny Boston is searching for life on Mars by dropping deep into this heart of darkness. This is a lava tube, a subterranean cave formed by underground lava flows during volcanic eruptions that occurred thousands of

发表于:2018-12-30 / 阅读(150) / 评论(0) 分类 国家地理2007年

Horizon - Life On Mars 火星生命 - 15

Of course, any terraforming is still a long way off. The next few expeditions to Mars will definitely be made by machines. NASA, are sending 2 rovers, capable of travelling over 100 meters a day in se

发表于:2019-01-02 / 阅读(85) / 评论(0) 分类 火星生命

Horizon - Life On Mars 火星生命 - 14

Well, hearing that Odyssey had found subsurface water on Mars was enormously exciting for somebody who is involved in planning to send humans to Mars. Water has a number of important uses for us. At t

发表于:2019-01-02 / 阅读(108) / 评论(0) 分类 火星生命

Horizon - Life On Mars 火星生命 - 13

Life on Earth is basically proteins and DNA, so we can wonder if there is life on Mars will also be DNA and proteins, the same type of DNA, the same type of proteins. One might think that DNA is such

发表于:2019-01-02 / 阅读(94) / 评论(0) 分类 火星生命

Horizon - Life On Mars 火星生命 - 10

But they never got there. The first disappeared into deep space. Another missed its target when its coordinates were confused. One NASA control center was working in metric, the other in feet and inch

发表于:2019-01-02 / 阅读(106) / 评论(0) 分类 火星生命

SCIENCE IN THE NEWS - Mars Once Had Moving Plates Like Earth

SCIENCE IN THE NEWS - Mars Once Had Moving Plates Like Earth Has Now By Katherine Gypson, Cynthia Kirk and Karen Leggett Broadcast: Tuesday, November 08, 2005 (MUSIC) VOICE ONE: This is SCIENCE IN THE

发表于:2019-01-02 / 阅读(58) / 评论(0) 分类 科技之光

'A Princess of Mars,' by Edgar Rice Burroughs, Part Two

Editor's Note: Last week we brought you the first of four programs called A Princess of Mars. Our story is from a series of books by American writer Edgar Rice Burroughs. They are science fiction stories, a mix of imagination and science. Last week,

发表于:2019-01-02 / 阅读(331) / 评论(0) 分类 2017年VOA慢速英语(一)月

Mars Rover Finds Evidence of Ancient Sea

Mars Rover Finds Evidence of Ancient Sea David McAlary The U.S. space agency NASA says Mars once had a shallow, salty sea that could have supported life. The evidence has come from chemical and physic

发表于:2019-01-04 / 阅读(60) / 评论(0) 分类 VOA2004（上）--各类新闻

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

发表于:2019-01-04 / 阅读(113) / 评论(0) 分类 VOA2004（上）--各类新闻

The Motion of Mars

63 火星的神秘运动 DATE=6-27-01 TITLE=SCIENCE REPORT - The Motion of Mars BYLINE=Mario Ritter (Start at 59

发表于:2019-01-30 / 阅读(92) / 评论(0) 分类 科技之光

voa标准英语2008-NASA Delays 2009 Mars Mission Due to Technical P

NASA says its next mission to check for life on Mars will have to wait two more years. In the meantime, NASA plans to continue testing its next-generation Mars rover, and it hopes to continue exploring the red planet with the help of the European Sp

发表于:2019-02-03 / 阅读(67) / 评论(0) 分类 VOA标准英语2008年(十二月)

VOA标准英语2008年-Mars Probe Approaching Red Planet

By Paul Sisco Washington 14 May 2008 The U.S. space agency's Mars probe is within weeks of landing near the Red Planet's north pole. NASA scientists in Washington recently talked about what they call the mission's seven minutes of terror. That is how

发表于:2019-02-03 / 阅读(90) / 评论(0) 分类 VOA标准英语2008年（五月）

英语歌曲:3OH!3 ft.Ke$ha - My First Kiss

打榜热歌：3OH!3 ft.Ke$ha - My First Kiss 3OH!3,一只新晋的rap rock风格乐队；Ke$ha，电音大行其道的今天又一个来势汹汹的新生女星。两个都有怪怪的名字，不知道合作的歌曲是什么味道的？这首My Fi

发表于:2019-02-08 / 阅读(87) / 评论(0) 分类 流行英文歌曲
最新学习文章
热门学习文章