地磁反转;地磁逆转

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(222) / 评论(0) 分类 Scientific American(八)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(279) / 评论(0) 分类 每日攻克5词

GRE数学常见表达式汇总 1.is equal to; is the same as = the result is; yields; gives 2.the sum of x and y; the total of x and y; x added to y; x increased by y; x+y x more then y; x greater than y 3.x minus y; x less y; the difference of x and

发表于:2019-01-03 / 阅读(174) / 评论(0) 分类 GRE英语

1. 3 college students were arrested Wednesday for allegedly setting fire to 9 Baptist churches across Alabama. One of the suspects allegedly said the first fires were set as a joke. The others were st

发表于:2019-01-08 / 阅读(266) / 评论(0) 分类 美联社新闻一分钟2006

[ti:UNIT 7 Know Our World Coming! Lesson 49: Let's Learn Geography!] [0:00.291]UNIT 7 [0:02.469]Lessons 49~56 Lessons 49~56 [0:05.445]Know Our World [0:07.187]You Will Learn 你会学到 [0:08.930]Functions 功能 [0:10.018]Talking About Numbers 谈论

发表于:2019-01-09 / 阅读(384) / 评论(0) 分类 河北教育初中英语(初中起点)八年级下册

Russian President Dmitri Medvedev has signed decrees granting formal recognition to the Georgian breakaway regions of Abkhazia and South Ossetia. But VOA Moscow correspondent Peter Fedynsky reports analysts say the move could promote separatism in R

发表于:2019-01-13 / 阅读(180) / 评论(0) 分类 VOA标准英语2008年(八月)

Geophysicist Probes Ocean's Secrets Today, Pitman is a distinguished professor of geophysics at Columbia University, and the recipient of many of his fields most coveted honors. Even though he is now in his 80s, Pitmans animated manner makes it easy

发表于:2019-01-13 / 阅读(388) / 评论(0) 分类 VOA标准英语2012年(一月)

KELLY MCEVERS, HOST: We're going to hear about something called geofencing. You might know about it. But if you don't, it's wireless technology that tracks mobile devices entering and exiting a specific area. Up to this point, it's mostly been used b

发表于:2019-01-16 / 阅读(240) / 评论(0) 分类 2017年NPR美国国家公共电台7月

Earth's magnetic field has reversed thousands of times since its formation 4.5 billion years ago. And scientists now believe that the next reversal is imminent. The race is on to predicting exactly when it will occur. In 2010, the European Space Agen

发表于:2019-01-22 / 阅读(149) / 评论(0) 分类 自然百科2011年

As the reversal approaches, the decay of our magnetic field will continue and cosmic radiation will get increasingly close to the Earth's surface. As the reversal approaches, the decay of our magnetic field will continue and cosmic radiation will get

发表于:2019-01-22 / 阅读(163) / 评论(0) 分类 自然百科2011年

Glatsmire's model shows that the magnetic poles swap places spontaneously due to / complex processes within the core. We were used to the idea that a compass points somewhere near the North Pole and hence we can use it for navigation, but there are p

发表于:2019-01-22 / 阅读(155) / 评论(0) 分类 自然百科2011年

By analyzing thousands of lava samples, geophysicists discover/ that the Earth's magnetic field has reversed over 18,000 times in the last 20 million years. On either side of these reversals is a long period of dramatically reduced field strength. Du

发表于:2019-01-22 / 阅读(152) / 评论(0) 分类 自然百科2011年

今天我们要学的词是reversal。 Reversal, 是逆转的意思。A reversal of policy, 意思是政策的逆转。A reversal of decision, 意思是改变主意。支持泰国前总理他信的政党在星期天的选举中成为国会第一大党,

发表于:2019-01-26 / 阅读(192) / 评论(0) 分类 英语单词荟萃

By Douglas Bakshian Manila 19 May 2007 International boxing champion Manny Pacquiao can deliver a knockout in the ring, but in the Philippine political arena the super featherweight appears headed for a loss. Preliminary returns from national electio

发表于:2019-02-03 / 阅读(171) / 评论(0) 分类 2007年VOA标准英语(五月)

今天我们要学的词是reversal。 Reversal, 是逆转的意思。A reversal of policy, 意思是政策的逆转。A reversal of decision, 意思是改变主意。支持泰国前总理他信的政党在星期天的选举中成为国会第一大党,

发表于:2019-02-05 / 阅读(163) / 评论(0) 分类 英语每日一词

U.S. President George Bush says Russia must not lay claim to the breakaway Georgian republics of South Ossetia and Abkhazia. VOA White House Correspondent Scott Stearns reports, Mr. Bush says all Russia forces must leave Georgia. Russia says there i

发表于:2019-02-06 / 阅读(185) / 评论(0) 分类 VOA标准英语2008年(八月)

The United States Wednesday vigorously condemned the military overthrow of the Mauritanian government and called for the restoration of democratic rule. The coup could lead to sanctions by the United States and European Union. VOA's David Gollust re

发表于:2019-02-06 / 阅读(175) / 评论(0) 分类 VOA标准英语2008年(八月)

Barbara Walters did a story on gender roles in Kuwait several years before the Gulf War. She noted then that women customarily walked about 10 feet behind their husbands. She returned to Kuwait recently and observed that the men now walked several ya

发表于:2019-02-07 / 阅读(184) / 评论(0) 分类 趣味英语

Topics: Movies - Butch Cassidy and the Sundance Kid; Mount Rushmore; threat versus menace versus peril; using should with have to; role reversal Words: loosely based on outlaw to flee sculpture to carve granite to draw to depict from the waist up to

发表于:2019-02-15 / 阅读(151) / 评论(0) 分类 美语听力 English Cafe

Do you know the open-air art gallery in London's Blackall Street? Not many Londoners know it either, but Henri does and he is willing to show it to you. Henri used to sleep rough until he met a charity that helps homeless people get back on their fee

发表于:2019-02-21 / 阅读(157) / 评论(0) 分类 英语听力精选进阶版
学英语单词
acanthus family
accroach to oneself
active probe
adjacent compartment
Amchlor
assure of
averoffs
beggarest
bobbin leading
bodysides
burnt r.
burrer
cancer pathohistology
cavum articulare
circular parts
class life assets depreciation range system
closed-ead mortgage
cobalt nitride
control valve for fluids
coquettishness
counterbande
crane neck pt.
current activity stack
degreased wool
demob
depict
dihydroketoacridine
eczemoline
emergency standby capacity
enoiling
evolvulus nuttallianus
fact fractal
flux depression
fringers
furance oil
gaysome
genus Amphicarpaea
grass mould
Gutenberg, Johannes
half-second
herring smelt
heterovaccine therapy
homoheptamer
hook joint
hypovolemic shock
in file
initial examination and measurement
intolerants
Jasminum undulatum
Kicking dicks
Kinbasket
koradi
lauroguadine
letter code
limiting design value
Loisy, Alfred Firmin
louis joblot
material position
megafunds
melt compression
menuver
microminiature welder
moneywise
more-inclusive
MV (mean value)
Neckartenzlingen
neighbourhood unit
non-fried
oftene
penylalaninemia
peritoneal spaces
pinionists
pitpair
platonically
pluffs
prechecks
Prentice's rule
pseudonymises
pseudoprostyle building
pulse switch out
rack type cutter for spur and helical gears
Ramey type magnetic amplifier
rev st st
scour culvert
sea-cob
semi-structured? interview
shaft clevis
spheroidal angle
standard oil tank
state-operated
statistical model
take a lift
Teruel, Prov.de
thyreoid articular surface
top assembly drawing
touchdown runway visual range
transition level
unidiomaticity
Union Corse
weightlessness walking training
wide tee
wired AND