单词：ratio of grate area to heating surface
[网络] 炉蓖面和受热面比
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EXPLORATIONS - Mars Exploration, Part 2 By Paul Thompson Broadcast: Wednesday, February 04, 2004 (THEME) VOICE ONE: This is Shirley Griffith. VOICE TWO: An artists picture of a Mars Rover vehicle. And
Explorations
Text Would you choose to live underground if you could gain many advantages from doing so? Weather would no longer trouble you. Temperature would remain the same all the year round. Artificial lightin
大学英语精读第四册
Hello,everyon [00:06.56]Today,we'll talk about another planet,Mar [00:24.76]Mars is one of the planets in the solar syste [00:40.96]It is the forth planet from the su [00:54.54]It is named for the Roman god of wa [01:09.28]because it appears fairly r
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No statues, no obelisks, no temples, nothing to suggest this could once have been home to the ancient world's great lost capital. When I came first to this area and to this site, I was shocked. Nothing was to be seen at the surface. No clue where to
遗失的法老城市
SCIENCE IN THE NEWS - Searching for Answers About What Harms Coral Reefs, and What May Protect Them A look at recent studies of coral reefs. Some scientists say rising temperatures have damaged almost half around the world. Yet many reefs stay color
VOA慢速英语2008年（三）月
托福阅读的问题，归根结底就是读不懂：文章读不懂，或者问题和选项读不懂。一切所谓的解题技巧也是为了帮助我们读懂，而不是在读不懂文章的基础上仍然能够解题。在一篇700多单词的文
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Experts Meet to Understand Decrease in Humpback Whales Off Hawaii Every winter, thousands of humpback whales migrate from Alaska to the warmer waters near the Hawaiian Islands. There, they have sex and give birth before making their return trip north
2018年VOA慢速英语(十一)月
There are many theories about what happened to the missing Malaysia Airlines plane but confirmed information is hard to come by. We\'ll tell you what we know today on CNN Student News. \It\'s been 13 days since the flight with 239 people aboard vanis
CNN2014年(三)月
Worlds within Worlds First of all let us consider the earth (that is to say, the world) as a planet revolving round the sun. The earth is one of mine planets which move in orbit round the sun. These n
有声英文阅读
EXPLORATIONS - Days of Apollo: Collecting Rocks, and Making History, on the MoonBy Marilyn Rice Christiano Broadcast: Wednesday, September 06, 2006 ANNOUNCER: EXPLORATIONS -- a program in Special Engl
2006年慢速英语（九）月
The American popular female singer Lady Gaga is famous for creating the fashion. Of course, the fashion she created is not accepted by the old generation but is admired by the young people. They believe that it stands for their individuality. There i
英语作文
Compatible - When one object can be used interchangeably with another. Composite Baseband - The unclamped and unfiltered output of the satellite receiver's demodulator circuit. It contains all of the
电信英语
A few months ago the fairy tale came true. 几个月前，童话故事成真了！ We announced to the world that we know what these streaks are. It's liquid water. 我们向世界宣布，我们已经知道这些条纹是什么了。是液态水。
TED演讲科学篇
When summer hits, I dread jogging outside. But a study finds that elephants can be in true danger in the heat. As creatures get bigger, they have smaller surface area to body volumn ratios. Fully-grown Asian eleplants thus pack a lot of mass into a b
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This is SCIENCE IN THE NEWS, in VOA Special English. I'm Christopher Cruise. And I'm Bob Doughty. Winter has brought cold weather to many parts of Earths northern hemisphere. With the cold comes a danger as old as mans knowledge of fire -- death or i
英语语言学习
33 阿波罗登月计划（三） DATE=4-25-01 TITLE=EXPLORATIONS #1949 - PROJECT APOLLO, PART 3 TYPE=SPECIAL ENGLISH FEATURE BYLINE=MARILYN RICE CHRISTIANO ANNCR: EXPLORATIONS -- A PROGRAM IN SPECIAL
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EXPLORATIONS - Cassini-Huygens at Titan By Paul Thompson Broadcast: Wednesday, February 02, 2005 (MUSIC) VOICE ONE: I'm Faith Lapidus. VOICE TWO: And I'm Steve Ember with EXPLORATIONS in VOA Special E
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Li Weiqi, a 40-year-old auxiliary traffic police officer from Hangzhou's West Lake detachment of the Traffic Management Bureau, said he noticed something weird about the road surface of the intersection where he was on duty on April 21. When I walked
英语新闻
Li Weiqi, a 40-year-old auxiliary traffic police officer from Hangzhou's West Lake detachment of the Traffic Management Bureau, said he noticed something weird about the road surface of the intersection where he was on duty on April 21. When I walked
2016CRI中国国际广播电台
By bending arms and legs or angling her bodypresenting more or less surface area to the groundshe can change her rate of fall, slowing or speeding up her terminal velocity around ten or twenty miles per hour. To fall as fast as two hundred miles per
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