激光跃迁频率

By Carol Pearson Washington 30 April 2008 Ten years ago, the U.S. Food and Drug Administration approved LASIK, eye surgery with a laser that enables people to see without glasses. But about five percent of LASIK procedures fail, and those patients ca

发表于:2018-12-08 / 阅读(141) / 评论(0) 分类 VOA常速英语2008年(四月)

What's the frequency kenneth is your benzedrine Uh huh I was braindead locked out numb not up to speed I thought I'd pegged you an idiot's dream Tunnelvision from the outsider's screen I never understood the frequency Uh huh You wore our expectations

发表于:2018-12-13 / 阅读(183) / 评论(0) 分类 Friends 老友记全10季英语插曲

EXPLORATIONS - The History of the Laser Welcome to EXPLORATIONS in VOA Special English. Im Mario Ritter. This week, we tell about one of the most recognizable objects in science fiction the laser. It is one of the best examples of how technology can

发表于:2018-12-16 / 阅读(125) / 评论(0) 分类 2013年VOA慢速英语(二)月

Economics Report - A Closer Look at High-Frequency Trading 经济报道 - 近距离审视股票市场高频交易 This is the VOA Special English Economics Report. 这里是美国之音慢速英语经济报道。 Once, stocks were traded through the

发表于:2018-12-16 / 阅读(166) / 评论(0) 分类 2011年VOA慢速英语(十)月

New Laser Device Helps Parkinson's Patients Walk 新激光设备帮助帕金森患者重获行走能力 Parkinsons disease slowly destroys the brains ability to control the muscles, depriving the patients of their mobility. Researchers at the Mayo Cl

发表于:2018-12-16 / 阅读(111) / 评论(0) 分类 VOA标准英语2014年(二月)

Grammar Girl here. Today, Bonnie Trenga will help us choose better transition words. This article could make you a tad hungry, because today were comparing the art of writing to the art of making a sandwich. In fact, just for today, we might need to

发表于:2019-01-02 / 阅读(142) / 评论(0) 分类 英语语法 Grammar Girl

On January 11, Norway became the first country to begin turning off signals from its FM radio network. The Norwegian stations will instead use only digital audio broadcasting, called DAB. FM, or frequency modulation, radio stations have been in opera

发表于:2019-01-02 / 阅读(191) / 评论(0) 分类 2017年VOA慢速英语(一)月

The United States Navy has demonstrated a new laser weapon operating in the Persian Gulf. The Laser Weapons System, or LaWS, is deployed on the USS Ponce transport ship. A live test firing of the weapon was recently carried out for Cable News Network

发表于:2019-01-02 / 阅读(137) / 评论(0) 分类 2017年VOA慢速英语(七)月

In 1963, President John Kennedy gave a famous speech at American University. In the speech, Kennedy said the following lines: Our problems are manmade; therefore, they can be solved by man. And man can be as big as he wants. No problem of human desti

发表于:2019-01-03 / 阅读(136) / 评论(0) 分类 2017年VOA慢速英语(九)月

This is All Things Considered. I'm Michelle Norris. Phone calls from Sweden woke up two American scientists this morning, John Hall and Roy Glauber. They will share the Nobel Prize for Physics with a German Researcher Theodor Haensch. All three worke

发表于:2019-01-08 / 阅读(212) / 评论(0) 分类 2005年NPR美国国家公共电台

Monday's meeting at the White House between President George Bush and President-elect Barack Obama is the latest symbol of a presidential transition that appears to be moving ahead smoothly, at least initially. VOA National correspondent Jim Malone

发表于:2019-01-09 / 阅读(153) / 评论(0) 分类 VOA标准英语2008年(十一月)

The History of the Laser Welcome to EXPLORATIONS in VOA Special English. Im Mario Ritter. This week, we tell about one of the most recognizable objects in science fiction the laser. It is one of the best examples of how technology can go from the sci

发表于:2019-01-12 / 阅读(185) / 评论(0) 分类 2013年VOA慢速英语(五)月

EXPLORATIONS - The Laser: Futuristic Science Found at Your Local Store MARIO RITTER: Welcome to EXPLORATIONS in VOA Special English.Im Mario Ritter. This week, we tell about one of the most recognizable objects in science fiction the laser. It is one

发表于:2019-01-12 / 阅读(159) / 评论(0) 分类 2012年VOA慢速英语(一)月

High Frequency Traders Under Scrutiny 美司法部调查高频交易 The U. S. Justice Department is investigating the relationship between high frequency trading firms and major exchanges -- and regulators in Washington and the state of New York are

发表于:2019-01-14 / 阅读(170) / 评论(0) 分类 VOA标准英语2014年(四月)

今天我们要学的词是transition。 Transition, 是过渡的意思。A smooth transition, 就是平稳过渡。古巴总统卡斯特罗宣布辞去国务委员会主席的职务。美国总统布什表示,希望古巴能由此开始向民主过渡

发表于:2019-01-25 / 阅读(139) / 评论(0) 分类 英语每日一词

By Paul Sisco Washington 14 November 2007 At the McDonald Observatory in western Texas, a unique space program has been quietly underway for more than 30 years. It is called the Lunar Laser Ranging Program. VOA's Paul Sisco has more. Research scienti

发表于:2019-01-31 / 阅读(161) / 评论(0) 分类 VOA常速英语2007年(十一月)

今天我们要学的词是transition。 Transition, 是过渡的意思。A smooth transition, 就是平稳过渡。古巴总统卡斯特罗宣布辞去国务委员会主席的职务。美国总统布什表示,希望古巴能由此开始向民主过渡

发表于:2019-01-31 / 阅读(140) / 评论(0) 分类 英语单词荟萃

By Al Pessin Pentagon 19 October 2007 The U.S. military's effort to rebuild major infrastructure in Iraq will be winding down during the coming year, leaving the Iraqi government to fund the effort and to find engineers capable of handling the projec

发表于:2019-01-31 / 阅读(163) / 评论(0) 分类 2007年VOA常速英语(十月)

There are many ways to express the frequency of events. Here are just a few. 你可以用许多方式来表达事情发生的频率,以下仅为其中一些。 1. a few times 1.几次 2. all the time 2.总是 3. almost always 3.几乎总是 4. almo

发表于:2019-02-03 / 阅读(176) / 评论(0) 分类 实用英语

NATO's secretary-general says foreign forces in Afghanistan will remain on combat duty during the scheduled transition to Afghan security control in 2014. That statement by Anders Fogh Rasmussen came after U.S. Defense Secretary Leon Panetta said Ame

发表于:2019-02-08 / 阅读(147) / 评论(0) 分类 英语新闻
学英语单词
a month or so
admission of foreign investment
air-supplied
alcids
arnosulfan
Asquithians
aucs
auxiliary feeder
backsight method
barium formate
be all beer and skittles
be inferior to
benevolent fund
Björninn
Brobdingnagian
cell belt
common flexor sheath
condra
contact of the batholith
corn-land
countermarking
couzens
digital to synchro converter
Dobroszyce
ecological psychology
emission response time
Faeroe-Shetland Channel
field tester
first-hand
flux-frequency convertor
garage-punk
Helicorbus
heteropolar generator
hoangs
Iberville
issueth
jolly god
licey
long-noded pit viper
low sodium diet
lube oil filling main conection
machinable cast iron
market education
marsh bog
Maryal
movie theaters
multilevel systems
mycopesticide
Mānjra
natrium carbonicum calcinatum
Natur-Aid
ncxeridine
nopes
norfenefrine
paint dermatitis
paringauxes
pelissero
petty cashes
phialum
piemakers
pitchable
plant geneticist
plant public address system
plantagonine
political consultant
polydisk plough
polymerizable components of monomer system
pop-ins
pretendings
pseudoeutectic
put one's hand in a hornet's nest
re fire
reducing pipe
rib deformity
right side spin
rotary mechanical pump
rulering
sanmarco
Semen Sesami Nigri
separate benzene nuclei compound
singingly
sodium peroxycarbonate
solid measure
static tree
Styrax argentifolius
sublevel stoping
Susie-Q
tandem drawing-machine
To'iave'a
torsiograph
traceroute
turn-off
Ubinskoye
vena contracta
viewing audiences
Wakkanai
we are family
When the band begins to play
windmill service
xylotrechus incurvatus incurvatus
zaccarias
zygoplast