磁极迁移

By Parke Brewer The women's pole vault provided one of the stirring dramas of the 2004 Olympic track and field competition. Until the mid 1990s, women's pole vault was not taken very seriously, mainly

发表于:2018-12-12 / 阅读(79) / 评论(0) 分类 VOA2004(下)--雅典奥运

This is Scientific American's 60-Second Science. I'm Adam Hinterthuer. Got a minute? Don't be fooled by those big bovine eyes and the mouth slowly chewing cudcows have a magnetic personality. At least thats the claim made by German researchers in the

发表于:2018-12-24 / 阅读(114) / 评论(0) 分类 Scientific American(八)月

If you splashed down in the Atlantic, you'd flounder on which way to swim. But a hatchling loggerhead turtle would know just where to paddleby reading the Earth's magnetic field. Scientists knew turtles can pinpoint latitude this way, because the fie

发表于:2018-12-24 / 阅读(70) / 评论(0) 分类 Scientific American(二)月

说一口流利的英语,从简单的单词开始。 听听,读读,背背,今天你的词汇量又增加了5个。 单词/词义 中英例句 单词听读 kneel [ ni:l ] She knelt to pray. v. 跪

发表于:2018-12-30 / 阅读(125) / 评论(0) 分类 每日攻克5词

Larry Newitt from the Geological Survey of Canada charts the movement of the magnetic North Pole as it wanders the icy reaches of northern Canada. To determine where the magnetic pole / is, we can't rely on one single observation. What I try to do is

发表于:2019-01-22 / 阅读(74) / 评论(0) 分类 自然百科2011年

They are constantly on the move. New-born calves have to be up and running the day they are born. But the vast herds do not travel alone. Wolves. Packs of them, eight to ten strong, shadow the migration. And they are hungry. Its the newly born calves

发表于:2019-01-23 / 阅读(79) / 评论(0) 分类 探索与发现2012年

Day 10. And the mother has let her cubs a mile from the den. Its time to put them to the test. Theyve grown enormously in confidence, but they dont have their mothers sense of urgency. At last it seems that they are ready for their journey. And they

发表于:2019-01-23 / 阅读(73) / 评论(0) 分类 探索与发现2012年

The latest data from the twin Voyager spacecrafts suggest the outer edge of the solar system is not smooth but filled with giant magnetic bubbles. Scientists say the turbulent bubbles are the result of the interaction between the Suns magnetic field

发表于:2019-02-06 / 阅读(104) / 评论(0) 分类 英语新闻

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发表于:2019-02-09 / 阅读(167) / 评论(0) 分类 加州语文教材California Treasures G5

It has long been known as ESP, Spider Sense, or the ability to see things before they happen. 一直以来,第六感也被称为超感知觉、蜘蛛感应,也就是预知未来事物的能力。 But now scientists have proved that human really d

发表于:2019-02-09 / 阅读(70) / 评论(0) 分类 大学四六级阅读

By calculating how old the rocks are where we find these ancient compasses, we can figure out how long ago the magnetized parts were locked in. That tells us which direction was magnetic north tens of thousands of years ago. Surprisingly, its not alw

发表于:2019-02-23 / 阅读(94) / 评论(0) 分类 英语时差8,16

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(257) / 评论(0) 分类 2019年VOA慢速英语(二)月
学英语单词
'Babe' Ruth
acousto-optic isolator
actuelle
aeetes
aerial support
AGS, A.G.S.
anabiont
anomalocera olivacea insularis
anti-secularization theory
argiope ocula
Arthracanthida
balloonings
basal ophthalmoplegia
blaydes
bless us
botling
broadsword
charge machine isolation valve
chondriom
cocoa plums
compass variation
courtmacsherry b.
criminal slaves
curved faced compact
depression of mediastinum
digital satellite radio
dissimilar to
DNT
double standard pitch auger
ductile bed
duillie
dummy bus bar
Egmont
essential amino-acid therapy
Ethocalid
executive support system
fluorodeoxyuridine
foreign collection
Forest-grower
fulgurator
gas-making log book
generalduty
gripping tongs
guinea flowers
halotolerant microorganism
Harcourtians
homotetramer
hood suport
hossa
i-tourned
IFRA
inmotion
input speed
interim spare parts list
Io moth, io moth
Kadrina
lanthorns
laricariidaes
licensed program
lictors
ligament of left superior vena cava
long range
macrozamin
minimum standard of living
MOUNTBATTEN
Nisidon
Nunsthorpe
on the reverse
one-male
oore
original converyance
overdream
partial protein
Paswāl
plane atmospheric wave
plectranthus rugosus makino
porites annae
pterygoid tubercles
Pulacayo
Qareh Urgān, Kūh-e
radiologies
rate-of-keying error
repurposes
rvlc
Saddle I.
sansuis
secretiveness
seismometers
self-absorbed
slack tide
subclimates
syimmetric
tank pressure
The clerk hepled me find what I wanted
the pommel horse
thermo-cracking distillation
Topla
unhopefully
very large scale integrated circuit (vlsi)
Vigna vexillata
VoiceLink
zero corrlation