震波径;震波路线, 震波路线

The American space agencys lander InSight is to arrive on Mars Monday. The event will mark the space agencys return to the planet. Unlike NASAs Curiosity rover, which arrived in 2012, InSight will not move across the planets surface. Instead it will

发表于:2018-11-27 / 阅读(437) / 评论(0) 分类 2018年VOA慢速英语(十一)月

Passage 20 Waves How does light get from the sun to the earth? How does music get from the stage to the audience? They move the same way in waves! Light and sound are forms of energy. All waves carry energy, but they may carry it differently. Light

发表于:2018-11-30 / 阅读(221) / 评论(0) 分类 英语专业四级听写

How does light get from the sun to the earth? How does music get from the stage to the audience? They move the same way in waves! Light and sound are forms of energy. All waves carry energy, but they may carry it differently. Light and sound travel t

发表于:2018-12-01 / 阅读(226) / 评论(0) 分类 新东方CET6阅读

(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(185) / 评论(0) 分类 托福听力短文

When The Biggest Earthquake Ever Recorded Hit Chile, It Rocked The World play pause stop mute unmute max volume 00:0003:30repeat repeat off Update Required To play the media you will need to either update your browser to a recent version or update yo

发表于:2018-12-17 / 阅读(108) / 评论(0) 分类 2016年NPR美国国家公共电台8月

Feels good to say its Friday. Thank you for closing out the week with CNN Student News. Were diving in(拱进来) today with a premise(前提;提论): Public opinion can influence political leaders. Basically, the more people push for something, th

发表于:2018-12-19 / 阅读(137) / 评论(0) 分类 CNN2013年(四)月

April 18, 1906, California's San Andreas Fault snaps, shaking San Francisco for nearly 60 terrifying seconds .When the trembling stops, the disaster is only beginning. Gas lines rupture, setting off massive fires, some 700 people die. Most of the ci

发表于:2018-12-30 / 阅读(147) / 评论(0) 分类 国家地理2008年

The arrival of the P-waves in Valparaiso feels like a long sonic boom. Windows and buildings shudder. Some of the P-waves shoot up into the atmosphere, emitting a frightening roar. The secondary waves follow, carrying most of the earthquake's energy.

发表于:2018-12-30 / 阅读(190) / 评论(0) 分类 国家地理2007年

Broadcast: May 16, 2003 By George Grow This is the VOA Special English Environment Report. Scientists in the United States have developed a computer program that they say could provide an early warnin

发表于:2019-01-02 / 阅读(136) / 评论(0) 分类 VOA2003(上)-科技导航

SCIENCE IN THE NEWS - The Ever-Present Threat of Tsunamis BOB DOUGHTY: This is SCIENCE IN THE NEWS in VOA Special English. Im Bob Doughty. FAITH LAPIDUS: And Im Faith Lapidus. This week, we tell about tsunamis -- the deadly sea waves often caused by

发表于:2019-01-12 / 阅读(131) / 评论(0) 分类 2011年VOA慢速英语(六)月

AS IT IS 2016-04-19 North Korean Volcano Waiting to Blow 朝鲜火山或爆发 A volcano in North Korea is at risk of erupting, according to scientists. Scientists say Mount Paektu, on the border of North Korea and China, had one of the largest erupt

发表于:2019-01-12 / 阅读(122) / 评论(0) 分类 2016年VOA慢速英语(四)月

Australia has introduced a tsunami warning system, which experts hope will become an integral link in a network stretching across the Indian and Pacific oceans. The Australian Tsunami Warning Center will help provide a regional monitoring system for

发表于:2019-01-13 / 阅读(108) / 评论(0) 分类 VOA标准英语2008年(十一月)

April 18, 1906, California's San Andreas Fault snaps, shaking San Francisco for nearly 60 terrifying seconds .When the trembling stops, the disaster is only beginning. Gas lines rupture, setting off massive fires, some 700 people die. Most of the cit

发表于:2019-01-22 / 阅读(141) / 评论(0) 分类 自然百科2008年

The loss of the magnetic field has a catastrophic impact on the planet's evolution. Mars becomes the red planet we see today. If earths magnetic protection continues to fade, would it suffer the same fate? If it vanishes completely, the planet might

发表于:2019-01-22 / 阅读(164) / 评论(0) 分类 自然百科2011年

The US Government is testing an early warning system for earthquakes, which could buy vital seconds of time in advance of a major incident. For years the US has lagged behind Japan in quake detection technology and it is hoped that this latest system

发表于:2019-02-14 / 阅读(136) / 评论(0) 分类 世界各地新闻集锦

The ground may feel solid, but far beneath our feet, extremely hot rock at extremely high pressure is flowing like slow, underground rivers. No one has ever seen that far into the earth, but we see the results of that movement in every earthquake and

发表于:2019-02-15 / 阅读(103) / 评论(0) 分类 英语时差8,16

And the direction the crystals are pointing makes a difference to the speed seismic waves travel through the rock: a wave traveling parallel to the crystalsin other words, along the length of the toothpickmoves faster than a wave traveling in the oth

发表于:2019-02-15 / 阅读(114) / 评论(0) 分类 英语时差8,16

Yesterday's earthquake in Mexico was the second in less than two weeks and brought back memories of the terrible tremor that hit 30 years to the day yesterday. So many are asking about why the country and region seem more prone to these earthquakes.

发表于:2019-02-17 / 阅读(125) / 评论(0) 分类 PBS访谈社会系列

Californians participated in an annual drill, and helped prepare for what scientists say could strike at any moment, an earthquake. Scientists have also been busy preparing. The US Geological Survey recently unveiled its new earthquake alert system c

发表于:2019-02-24 / 阅读(221) / 评论(0) 分类 VOA标准英语2019年(二月)

He had discovered the boundary between the crust and the layer immediately below, the mantle; 他发现地壳与下面一层即地幔的界线, this zone has been known ever since as the Mohorovicic discontinuity, or Moho for short. 此后,这个区

发表于:2019-02-25 / 阅读(124) / 评论(0) 分类 万物简史
学英语单词
adjuvanticity
aegirine-felsite
aerolinoscope
al mani
alsace (alsatia)
amorphane
anterior ampullary nerve
antihyperglycaemic
apneusis apneustic breathing
automatic sequential
axis of depression
aymer
Balerma
basic examination method
Bergmann's fibers
Bt.
calibration potential transformator
carpenter shop
chemical oceanographer
Chile nitre
clock coder
cohomology class
collector junction diode
conditional-cash-transfer
coniocybe glacilenta ach
countrysiders
crab seed
cresorcin(ol)
crib midget
DAP (data acquisition and processing system)
deoxidise
dionysius of alexandria
diploneis chersonensis
dog-meat
driving-gear
dullwitted
duress(e)
dynamic mechanical analysis
eupareunia
fahl
feulgen's reagent
fix a millstone about one's neck
freon gas
fructokinase
genus Combretum
give the blessing
Golden City
heavy burden
hepatocyte
high strength hot rolled reinforced bar
hybrid arrested translation
instruction executions
intercuts
keat
knife drive crank
libidinal energies
light-handedly
llamaba
lucianne
Macrotis lagotis
meadow chernozem
middelskot
milky maturity
Mosul school
mumpreneurs
non working current
non-equity
oral steroid contraceptive
origin of walk
oxazacyclobutane
packet writing
page wire
palominos
paternal aunt
paucities
physicochemical analysis
pissing
plough blade
pronounces
quinternary vein
raunesclin
reproofs
rising threes
rollade
rudder axis
sanitist
Skallingen
spilite suite
startup phase
steer signal
subsequent printings
Sweet Briar
tamilnet.com
Telstar satellite
throw light on something
time-element relay
to one's profit
towing lights
underslung radiator
Vena sacralis mediana
well-worth
whole egg powder