【力学】动量中心系统 [亦作 center-of-momentum coordinate system]

More signs that the US economy is moving in the right direction: The US Labor Department says new claims for unemployment benefits declined last week, dropping below 400,000 for the first time since July 2008. Other data also shows that businesses ex

发表于:2018-11-29 / 阅读(234) / 评论(0) 分类 VOA标准英语2010年(十二)月

World Trade Center (Movie) In the aftermath of the World Trade Center disaster, hope is still alive. Refusing to bow down to terrorism, rescuers and family of the victims press forward. Their mission of rescue and recovery is driven by the faith tha

发表于:2018-12-07 / 阅读(270) / 评论(0) 分类 娱乐新天地Trailer 2006

Heres what scientists think happened, oh, about a hundred million years ago. There was this three-star system. The three linked stars were strolling through the galaxy but got too close to the giant black hole at the center. The hole swallowed one of

发表于:2018-12-24 / 阅读(133) / 评论(0) 分类 Scientific American(七)月

今天我们要学的词是momentum。 Momentum, 是势头的意思。 To gather momentum, 势头大增,to lose momentum, 势头减弱。美国前阿肯色州州长赫卡比在爱奥华州的基层党团会议选举中排名第一。No other candid

发表于:2018-12-30 / 阅读(166) / 评论(0) 分类 英语单词荟萃

A hypervelocity star appears to be the remains of a three-star system, one star of which was digested by the Milky Way's black hole, with the other two being combined and hurled away. Heres what scientists think happened, oh, about a hundred million

发表于:2019-01-02 / 阅读(201) / 评论(0) 分类 60秒科学

By Kane Farabaugh New York 05 November 2007 One of the hallmarks of Jimmy Carter's American presidency was a peace agreement between Egypt and Israel. It brought lasting peace between two former enemies. The experience encouraged Mr. Carter to spend

发表于:2019-01-11 / 阅读(163) / 评论(0) 分类 VOA常速英语2007年(十一月)

By David Gollust Jerusalem 01 August 2007 U.S. Secretary of State Condoleezza Rice held talks with senior Israeli officials Wednesday to try to restore momentum to the Israeli-Palestinian peace process. She came to Jerusalem from Saudi Arabia, where

发表于:2019-01-13 / 阅读(241) / 评论(0) 分类 2007年VOA标准英语(八月)

Space Shuttle Era Closes with Atlantis' Landing The Space Shuttle Atlantis and its four-person crew landed at the Kennedy Space Center in Florida just before dawn, bringing to a close a program that began in 1981 and leaving the United States tempora

发表于:2019-01-13 / 阅读(143) / 评论(0) 分类 VOA标准英语2011年(七月)

The battle over reforming the U.S. health care system has intensified in recent weeks, and the political stakes are growing for President Barack Obama as well as for Democrats and Republicans in Congress. Pres. Barack Obama listens to a question at

发表于:2019-01-14 / 阅读(128) / 评论(0) 分类 VOA标准英语2009年(八月)

The Space Shuttle Atlantis and its four-person crew landed at the Kennedy Space Center in Florida just before dawn, bringing to a close a program that began in 1981 and leaving the United States temporarily with no vehicle to transport astronauts int

发表于:2019-01-19 / 阅读(177) / 评论(0) 分类 VOA双语新闻 2011年7月

...I will accept this award - as a call to action, a call for all nations to confront the common challenges of the 21st century,' said Mr. Obama Paula Wolfson | Washington 09 December 2009 Pedestrians wait at a trolley stop in Oslo, Norway in front o

发表于:2019-01-19 / 阅读(160) / 评论(0) 分类 VOA标准英语2009年(十二月)

By Mil Arcega Washington, D.C. 10 July 2007 A worldwide poll of more than 100 million people has selected what it calls the new seven wonders of the world. The on-line poll picked: - the Roman Coliseum - the Taj Mahal - the Great Wall of China - Mach

发表于:2019-01-19 / 阅读(247) / 评论(0) 分类 2007年VOA标准英语(七月)

By Jim Malone Washington 13 February 2008 Senator Barack Obama got a major boost Tuesday with victories in the Democratic presidential primaries in Maryland, Virginia and the District of Columbia. Obama remains in a tight race with Senator Hillary Cl

发表于:2019-01-19 / 阅读(154) / 评论(0) 分类 VOA常速英语2008年(二月)

A massive underground Congressional Visitor's Center designed to accommodate millions of people visiting the U.S. Capitol each year has opened to the public. VOA's Dan Robinson reports the project, which was planned for two decades and took eight ye

发表于:2019-01-26 / 阅读(233) / 评论(0) 分类 VOA标准英语2008年(十二月)

THIS IS AMERICA - Kennedy Center to Expand Arts Education By Jerilyn Watson Broadcast: Monday, March 07, 2005 (MUSIC) VOICE ONE: Welcome to THIS IS AMERICA, in VOA Special English. I'm Faith Lapidus.

发表于:2019-01-30 / 阅读(234) / 评论(0) 分类 This is America

3 Must-Do Strategies for Building Momentum in Life The rhythm of daily action aligned with your goals creates the momentum that separates dreamers from super-achievers. I love momentum. Seriously, momentum is a beautiful thing. Momentum enables you t

发表于:2019-02-02 / 阅读(198) / 评论(0) 分类 阅读空间

今天我们要学的词是momentum。 Momentum, 是势头的意思。 To gather momentum, 势头大增,to lose momentum, 势头减弱。美国前阿肯色州州长赫卡比在爱奥华州的基层党团会议选举中排名第一。No other candid

发表于:2019-02-04 / 阅读(140) / 评论(0) 分类 英语每日一词

As African communities develop and modernize, proponents of traditional medicine are evolving new faces of the practice to keep up. Naomi Seck reports from a holistic healing center in Senegal's capital, Dakar, where traditional healing practices ar

发表于:2019-02-06 / 阅读(195) / 评论(0) 分类 VOA标准英语2008年(十二月)

By George Dwyer Washington 18 December 2007 New York's Rockefeller Center Plaza is one of the city's most recognizable landmarks - and one of its most popular tourist stops as well. The busiest time of year comes during the Christmas season, when a g

发表于:2019-02-08 / 阅读(151) / 评论(0) 分类 VOA常速英语2007年(十二月)

10 Quotes To Change Your Momentum Weve all been there. Were out of ideas and nothing new is coming to our tired and weary minds. When these moments strike, Ive always been a fan of reading quotes to get me out of that funk, whether its writing a term

发表于:2019-02-18 / 阅读(305) / 评论(0) 分类 阅读空间
学英语单词
-metric,-metrical
agroinfiltration
all cotton fabric
amenity
ampayr
anguid lizard
as far as applicable
astucity
basdolin
be fed up
benedettas
bilkoes
biology of protein
Bizhanabad
Central Highland
China Polish Joint Stock Shipping Company
chrononauts
coast survey
comparative test block
conchoecetes intermedius
coupsticks
damages caused by the seller's fault
David Hubel
deoxyuridine monophosphate
dibromoanthranilic acid
disorganizations
drive spindle
exhaust pulse scavenging
extreme value distributions
fatal accident frequency rate
fellow members
figure poem
forwarders
Goole
Grandchamp
ground-nuts
half-armour
halfangel
Helen Newington Wills
helicopter deck indicating light
hemp-fibred plaster finishing coat
hingeless
Hispanisms
holding in the sale of commodities
holstering
hyatt
interdictively
interference relay
Ivanchug
know something by heart
koror (oreor) i.
kortum
lemgruber
line join
linking duality
lipomelanic reticulosis
loss reserves
malamuds
mantomycin
mercury nitride
methyl carbazole
MFMs
micro raman spectroscopy
Mkuranga
modier
Montalegre
montuna
mount bellew bridge
naphthalene heptachloride
nitrogen narcosis
non-isothermal jet
nonproducer
npc-classification
ofdaw
oil capacitor
onset of monsoon
owe someone one
phaxas hanleyi
power-house superstructure block
preductivity
probability logic
program development time
protractor muscle
radiosounding system
rental contract
rer
rigid chain
Rubus playfairianus
Saskatonian
scare story
Semistrong-form efficiency
sex role stereotypes
small-fruited fig tree
stratigraphically
sub-underwriting contract
temptableness
titivating
torminous
United Artists
unprintable character
Valparaiso University
weighable