激光-多普勒-速度测量法

Editors note: This is the third episode of four-part series on verb tenses. Be sure to listen to part one and part two first. For VOA Learning English, this is Everyday Grammar. Today we are going to talk about the perfect verb tenses. Perfect tenses

发表于:2018-11-27 / 阅读(477) / 评论(0) 分类 2016年VOA慢速英语(十二)月

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(152) / 评论(0) 分类 VOA常速英语2008年(四月)

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(136) / 评论(0) 分类 2013年VOA慢速英语(二)月

Dmitry Medvedev is the third and current President of Russia. He took office in May 2008 after winning the presidential election with 70% of the vote. He was formerly Deputy Prime Minister and Vladimir Putins chief of staff and right-hand man. Medved

发表于:2019-01-01 / 阅读(194) / 评论(0) 分类 各国名人英文介绍

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(151) / 评论(0) 分类 2017年VOA慢速英语(七)月

青霉素类 青霉素(G) Penicillin(G) Benzylpenicillin,苄青霉素,盘尼西林 青霉素V Penicillin V Phenoxymethylpenicillin 苯氧甲基青霉素 苄星青霉素 Benzathine Penicillin 长效西

发表于:2019-01-03 / 阅读(160) / 评论(0) 分类 医务英语

超声成像 ultrasonic imaging 实时成像 real-time imaging 灰阶显示 gray scale display 彩阶显示 color scale display 经颅多普勒 transcranial doppler 彩色多普勒血流显像 color doppler flow imaging 彩色血流造影 color flow

发表于:2019-01-08 / 阅读(169) / 评论(0) 分类 医学英语

AS IT IS 2013-08-19 Survival Shelters, Tornadoes and Old Ironsides 生存避难所,龙卷风和老铁壁 Hello, and welcome to the Monday edition of As It Is, our daily show for people learning everyday American English. 大家好,欢迎大家收听周

发表于:2019-01-12 / 阅读(147) / 评论(0) 分类 2013年VOA慢速英语(八)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(207) / 评论(0) 分类 2013年VOA慢速英语(五)月

AS IT IS 2013-09-11 Rising Temperatures Could Mean More Wildfires 不断上升的气温可能会意味着更多的森林大火 From VOA Learning English, welcome to As It Is! Im Mario Ritter. On our show today, we hear from two weather experts. We he

发表于:2019-01-12 / 阅读(273) / 评论(0) 分类 2013年VOA慢速英语(九)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(173) / 评论(0) 分类 2012年VOA慢速英语(一)月

直到我遇见你 The Sunstreak - Until I Met You Until I Met You The Sunstreak I once believed that there was no one for me, until I met you, But I couldnt see how happy I could be, until I met you, Until I met you, You Standing alone, no one to ca

发表于:2019-01-16 / 阅读(274) / 评论(0) 分类 好听的英文歌曲

Havent Met You Yet by Michael Buble I'm not surprised Not everything lasts I've broken my heart so many times I stop keeping track Talk myself in I talk myself out I get all worked up And then I let myself down I tried so very hard not to loose it I

发表于:2019-01-16 / 阅读(187) / 评论(0) 分类 听歌学英语

深情爵士男声Michael Buble Haven't Met You Yet Michael Buble I'm Not Surprised Not Everything Lasts I've Broken My Heart So Many Times, I Stop Keeping Track. Talk Myself In I Talk Myself Out I Get All Worked Up And Then I Let Myself Down. I Trie

发表于:2019-01-16 / 阅读(338) / 评论(0) 分类 好听的英文歌曲

新编英语教程第六册unit03_2_The_Night_the_President_Met_the_B

发表于:2019-01-25 / 阅读(216) / 评论(0) 分类 新编大学英语阅读部分

生活大爆炸第一季第六集_1:The Middle Earth Paradigm -Rajesh: Okay, if no one else will say I will. We really suck at paintball. 好吧,如果没人说那就我来说。我们在彩弹比赛中的表现实在太差了! -Howard: That wa

发表于:2019-01-28 / 阅读(248) / 评论(0) 分类 生活大爆炸第一季

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(178) / 评论(0) 分类 VOA常速英语2007年(十一月)

By Jessica Berman Washington 20 September 2007 Scientists say they have evidence that a ferocious dinosaur made famous by the movie Jurassic Park definitely had feathers. Experts say the dinosaur, called Velociraptor, had a wing structure just like m

发表于:2019-02-06 / 阅读(184) / 评论(0) 分类 2007年VOA标准英语(九月)

So there I was at seven thirty in the a.m., perched on my scooter at an intersection waiting to turn. I was sitting at the lights lost in my own thoughts when all of a sudden I became aware of a presence no, not a poltergeist; a bloke on a mountain b

发表于:2019-02-07 / 阅读(219) / 评论(0) 分类 阅读空间

Doppler on Wheels Rolls Into Tornados Doppler radar reads the weather based on reflections from items moving through the air. Joshua Wurman was the first to put the technology on wheels and drive it directly into the path of a tornado. I invented Dop

发表于:2019-02-17 / 阅读(204) / 评论(0) 分类 VOA常速英语2013年(八月)
学英语单词
abdominal pressure
Achelous River
akamantis
always and forever
amythaon
aniline hydrobromide
appraisement of securities
arteria testiculariss
artifactual masquerage
Assembly of First Nations
assenter
at fixed period
aticoantcotomy
basal skull fracture
belauds
bistable switch
black liquor
Bonnevie
botnyl isovalerate
bracteomania
broken plateau
button bar
cardioaccelerator
cavitation loss
Cenomanian Age
chamaedryfolia
colored agricultural film
conversational chaining
core-retainer plate
creamed spimach soup
cyclic reactor
cysthemorrhagia
Didymoplexis
discovery of discharge
drawn poultry
economic crises
energizing apparatus
environment software structure
equilibrium vaporization curve
fattening pig
firing auxiliary
free-throw line
froligozene
gelefication
glaukomflecken
global symbol dictionary
grimmin'
harpacticoid copepods
Hesperides
HMERGE (high order merge)
HW (half-wave)
hyfrecation
inching button
internal organ
iodocaffeine
jammr finder
judeo
keplerian trajectory
koernke
lamellate antenna
low-order merge
medical signal processing
menu language
millimeter wave integrated circuits
monetization of public debt
mutual reactance
national sport
network interface card
nickol
non-slip condition
novoaspirin
number of turns per unit length
omega-minus particle
one way rolling mill
overbearing conduct
pay forward
percuriam
phones back
photo-scanning system
portable magnetic particle flaw detector
Prairie du Rocher
programming module
Quamoclit pennata Bojer.
quarere
radiogold
Ranst
rarification
rose white
RRSP
Rufyiri
scene drop
schussed
soil constitnent
speech interpolation
strain-optical constant
tardidation
tractus tegmentalis centralis
trip distribution
two single ended siding
Vanda coerulea
warmblooded animal