液态地球内部

Scientists know that the combination of extreme heat and pressure changes carbon into diamonds. Such heat and pressure exist only in the hot, liquid mass of molten rock deep inside the earth. It is th

发表于:2018-12-01 / 阅读(150) / 评论(0) 分类 自考英语(一)78讲

(man) I'm glad you brought up the question of our investigations into the makeup of the Earth's interior. In fact --- since this is the topic of your reading assignment for next time --- let me spend these last few minutes of class talking about it.

发表于:2018-12-05 / 阅读(170) / 评论(0) 分类 托福听力短文

Diamonds 钻石 Diamonds are rare, beautiful, and also quite useful. They are the hardest substance found in nature. That means a diamond can cut any other surface. And only another diamond can make a

发表于:2018-12-05 / 阅读(117) / 评论(0) 分类 有声英文阅读

Diamonds Diamonds are rare, beautiful, and also quite useful. They are the hardest substance found in nature. That means a diamond can cut any other surface. And only another diamond can make a slight cut in a diamond. Diamonds are made from carbon.

发表于:2018-12-07 / 阅读(115) / 评论(0) 分类 双语有声阅读

SCIENCE IN THE NEWS - All About Fireflies and Possible Liquid Water on Mars CHRISTOPHER CRUISE: This is SCIENCE IN THE NEWS, in VOA Special English. Im Christopher Cruise. BOB DOUGHTY: And Im Bob Doughty. Today, we tell about evidence of liquid water

发表于:2018-12-07 / 阅读(148) / 评论(0) 分类 2011年VOA慢速英语(八)月

NASA's Juno Spacecraft Shows the Makeup of Jupiter Scientists are finding that the inside of Jupiter is just as interesting as the part of the planets atmosphere that we can see. At the center of the planet is a liquid mixture of the elements hydroge

发表于:2018-12-08 / 阅读(95) / 评论(0) 分类 2018年VOA慢速英语(四)月

But there was something even better. Odyssey may not just have found ice. There may also be liquid water, and that means, there could be living creatures there too. Right now, there might be liquid wa

发表于:2019-01-02 / 阅读(166) / 评论(0) 分类 火星生命

NASA's Juno Spacecraft Shows the Makeup of Jupiter Scientists are finding that the inside of Jupiter is just as interesting as the part of the planets atmosphere that we can see. At the center of the planet is a liquid mixture of the elements hydroge

发表于:2019-01-03 / 阅读(95) / 评论(0) 分类 2018年VOA慢速英语(四)月

Australian Scientists Propose a Telescope to Look Deep Underground Scientists in Australia want to build what they describe as a downward looking telescope to look for mineral wealth under the Earths surface. The telescope is really a project aimed a

发表于:2019-01-03 / 阅读(131) / 评论(0) 分类 2018年VOA慢速英语(十)月

[00:13.09]Reading, speaking and writing [00:16.54]I HAVE SEEN AMAZING THINGS [00:20.48]My first visit was to a space station [00:24.45]considered the most modern in this part of space. [00:28.21]Described as an enormous round plate, [00:31.92]it spin

发表于:2019-01-10 / 阅读(289) / 评论(0) 分类 高中英语人教版必修

Mantle 地幔 We are living on the surface of the Earth. 我们生活在地球表面。 So, what is inside the Earth? 那么,地球内部是什么? There is a mantle under the surface of the Earth. 地球表面以下是地幔。 The mantle takes

发表于:2019-01-10 / 阅读(225) / 评论(0) 分类 与美国小学生一起学英文第7册

Is there life beyond Earth in our solar system? 在地球以外,太阳系里还有生命吗? Wow, what a powerful question. 哇,多么掷地有声的问题! You know, as a scientist -- planetary scientist -- we really didn't take that very se

发表于:2019-01-18 / 阅读(116) / 评论(0) 分类 TED演讲科学篇

A new galaxy is formed where, instead of the discs that the original galaxies have, where all the stars are going around more or less on a plane. Instead the stars are going every which way just like the elliptical galaxies that we see. And so we are

发表于:2019-01-22 / 阅读(113) / 评论(0) 分类 自然百科2011年

Easily confused by this idea, there has a big thawed iron inner core, so that I think it's just the bar magnet, just permanent magnet frozen in nad, and that's where causes all the magnetic field. But it's too hot inside the Earth, that can't happen

发表于:2019-01-22 / 阅读(126) / 评论(0) 分类 自然百科2011年

The by-product of billions of years of production from the chemical smog factory in the upper atmosphere, the grains in Titan's dunes may literally fall from the sky. Like a rain of flash-frozen coffee grounds, they are swept by the wind into deep pi

发表于:2019-01-22 / 阅读(100) / 评论(0) 分类 自然百科2012年

HARI SREENIVASAN: Time now for our weekly segment on science called the Leading Edge, and the discovery of another possible Earth-like planet that's grabbing worldwide attention today. It is true, scientists have previously said they believe there ar

发表于:2019-01-27 / 阅读(93) / 评论(0) 分类 PBS访谈环境系列

We might not be alone in the universe. Actually, it may be confirmed as a very crowded place by new computer models developed to help identify habitable planets. Estimates of places that can sustain life have been based on the likelihood of them havi

发表于:2019-02-13 / 阅读(93) / 评论(0) 分类 英语听力精选进阶版

THE PART OF THE planet earth that the seas occupy has been assessed at 3,832,558 square myriameters, hence more than 38,000,000,000 hectares. This liquid mass totals 2,250,000,000 cubic miles and could form a sphere with a diameter of sixty leagues,

发表于:2019-02-25 / 阅读(179) / 评论(0) 分类 《海底两万里》中英双语有声读物

Apart from much else, our lively interior created the outgassing that helped to build an atmosphere 不说别的,我们活跃的内部使大量气体喷涌而出,帮助建立了大气层, and provided us with the magnetic field that shields us

发表于:2019-02-25 / 阅读(94) / 评论(0) 分类 万物简史

Magnetic North Pole Moving Faster Than Scientists Expected Earths north magnetic pole is moving, researchers say. It has moved so much, so quickly that a group of scientists hurried to change a model that helps guide shipping, airplanes and submarine

发表于:2019-03-12 / 阅读(328) / 评论(0) 分类 2019年VOA慢速英语(二)月
学英语单词
149PM
Abligo
acid cellulose
address modifiable
adpressing
arbutus
Arlus
assured ore
batchy
benchmark rate
bimolecular collision
buckler-shaped
busy-ness
Carswell's grapes
Chinese sausage
citrus mealybug
columnar deflection
complex hybridization
coumarouna odoratas
current mode complementary transistor logic
current sheet
decook
deselect all
digital oscilloscope
DNA snippet
dragon-slayings
dressing code
equin-
estimated average annual usage
fashion-design
fenoverine
fingerpointing
flawe
FORTRAN 77character set
gamma acids
Gondar
Gongylonema hominis
growth zone
hold-over grid
Hornchurch
hydroxyl bond
in outline
incorporificated
infinite multiplicity
insulated-gate thin-film transistor (igtft)
Kyogle
Lemon Heights
liquid-hydrogen
main frequency furnace
Mammut americanum
mass-analyzed ion kinetic energy spectrometry
mass-production
near sisht
neurophysiologically
newcasting
nonmonomeric
Nothnagel syndrome
nozzle regulation
optimum combination
optimum density
oral cyst
paraguays
passive dispersal
pillorised
ponced
problem specification laguage
protopetroleum
punch trimming
real-time image processing
relative-address coding
rhr reactor shutdown cooling supply
ring-necked pheasants
sarti
scomer
sebek
selective coupler
senile blepharochalasis of upper eyelid
single-arm tiller
slightly-injured
snowman
sono
spaceshiplike
Stachys oblongifolia
Streptococcus salivarius
symbol(in the instruction handbook)
tandemocracy
Tantallon
tax accrued
temporary cache
teragray
testes-determination
thiemes
tie to
top story
tracer control
trading spot
vacuum circuit breaker
Vadstena
Varjisträsk
waterbuses
well-wishings
yenta, yente