雷射光束发散度

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(155) / 评论(0) 分类 VOA常速英语2008年(四月)

澳洲流行天后 Kylie Minogue 最新MV《Crystallize》!小女孩演绎还没当歌星前的凯莉,拿着梳子对着镜子忘情歌唱,热舞。一代歌后的成长史呀,很励志的一首歌,有梦想就要去追逐。 歌词: When

发表于:2018-12-14 / 阅读(141) / 评论(0) 分类 流行英文歌曲

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(141) / 评论(0) 分类 2013年VOA慢速英语(二)月

I'd like to start with a short story. 我想先讲个故事。 It's about a little boy 有个小男孩 whose father was a history buff 他父亲是个历史爱好者, and who used to take him by the hand 常牵着他的手 to visit the ruins of an

发表于:2018-12-18 / 阅读(119) / 评论(0) 分类 TED演讲科技篇

beam, [bi:m] n 大梁(建筑中用作支撑的木材、金属或石头);光柱;臀围;平衡木 【船】横梁; 船幅; 船舷 (秤)杆; (犁)柄; (锄)把; 卷轴; 横杆; 杠杆 (鹿角的)主干 (灯光、日光、月光等的)束, 道,

发表于:2018-12-30 / 阅读(160) / 评论(0) 分类 不择手段背单词

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(157) / 评论(0) 分类 2017年VOA慢速英语(七)月

Bob Beamon established himself as the favourite in the 1968 long jump by winning 22 of 23 meets in the pre-Olympic season. He almost met with disaster in the qualifying round. After fouling his first two attempts, he had only one try left. His teamma

发表于:2019-01-08 / 阅读(224) / 评论(0) 分类 英美文化

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(212) / 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(176) / 评论(0) 分类 2012年VOA慢速英语(一)月

Right on the beam To fly by the seat of his pants 美国英语当中有许多成语和俗语都和过去的历史有关系。例如,美国开拓西部的过程给美国语言增添了不少色彩。可

发表于:2019-01-14 / 阅读(235) / 评论(0) 分类 美国习惯用语

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 science of the future to eve

发表于:2019-01-24 / 阅读(222) / 评论(0) 分类 英语语言学习

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(184) / 评论(0) 分类 VOA常速英语2007年(十一月)

1. 人行道:(B) Pavement;(A) sidewalk 2. 垃圾: (B) Rubbish;(A)trash 3. 足球:(B)football;(A)soccer 4. 地铁(B)Tube(A)subway 5.饼干:(B)biscuit;(A)cookie 6.糖果:(B)sweets;(A)candy 7.句号:(B)full stop;(A)period 8. 秋天:(B)autu

发表于:2019-02-02 / 阅读(164) / 评论(0) 分类 实用英语

Linda Lajterman suffered one of the worst experiences of her life while on a cruise with her husband and two other couples. Halfway through the trip, one of her friends stopped talking to her -- for good. 琳达?拉哲特曼(Linda Lajterman)在与丈夫

发表于:2019-02-09 / 阅读(131) / 评论(0) 分类 英语美文

Can you tell the difference between British and American English? Check out these words, then tell us which variety of English you tend to use by leaving a comment below. 英式英语和美式英语有什么不同?看看这些单词,然后说说你平

发表于:2019-02-13 / 阅读(163) / 评论(0) 分类 英文语法词汇

Science and technology 科学技术 Solar power from space 太空太阳能 Beam it down, Scotty 老兄,传下来吧 Harvesting solar power in space, for use on Earth, comes a step closer to reality 在太空获取太阳能以供地球之用:梦想距

发表于:2019-02-16 / 阅读(172) / 评论(0) 分类 经济学人科技系列

Officials could opt to abandon their tightening stance in order to counteract the trade turmoil. But that might erase the gains from the deleveraging. 官方可以选择放弃他们紧缩的立场以求缓和贸易混乱。但这么做会抹去来自于

发表于:2019-02-17 / 阅读(135) / 评论(0) 分类 经济学人财经系列

No textbook can prepare you for being in charge of people for the first time. All the plans you made in the glow of promotion to manager collapse in those early days with the realisation that people do not always do what you tell them to do. 没有哪本

发表于:2019-02-17 / 阅读(127) / 评论(0) 分类 阅读空间

A new scientific research report has found strong evidence suggesting that man's best friend originated from China some 33,000 years ago. 一项最新的科学研究发现了有力证据,证明人类最好的朋友狗,起源于大约3.3万年前的

发表于:2019-02-17 / 阅读(122) / 评论(0) 分类 阅读空间

India remains non-committal on supporting French Finance Minister Christine Lagarde for the top job at the International Monetary Fund. Lagarde visited the Indian capital during a campaign(运动活动) to counter opposition from emerging nations

发表于:2019-02-19 / 阅读(197) / 评论(0) 分类 英语新闻
学英语单词
accessory hemiazygous vein
air film conveyer
anticipated buying
Attical
avosettas
axial wobble
boar-spear
bogymen
bovine somatotropin
brekdown diode
bugus message
bursae subtendinea musculus obturatoris interni
Chumaky
colonial protozoa
comfort line
commonplace-book
condenser bent-tube
continuous wave radio telegraph
courtni
CSFO
culturelle
Debden
detailed regulation
dielectric-waveguide mode
diisopropyl ester
direct X-ray analysis
due date payment
emblematicize
endenizens
enthroner
euhemerization
fair and equitable
Fermat's equation
film art sociology
floor man
foreground paging
friere
g-region
glass (liquid) level ga(u)ge
gooeyness
gross national demand
guaranteed maximum continuous output
hammarsten's casein
have oneeye on
haxbies
high rigidity plastics
hypogravics
individual entrepreneur
intermediate grade steel
Kureika
Lagthing
lantere
larb
larussa
latchkey child
layer type cable
linea axillaris
liter capacity
menoxenia
Mimias, C.
mongrelizations
multiple schedule tariff
Musaceae
navy coating
Nazimovo
Oghi
on/off
ordaz
partial lethal gene
pesetas
photoelectric cell amplifier
prepon
preservation of wooden tie
pressure vessel(closure) head
product registration
progestogens
program folding
prune down
Przeciszów
pulse-rate multiplication
radio transmission frequency measuring system
reference id
ring-formed clear-cutting
salespoints
salt-glazed
skew-bevel gearing
slowest ratio
sonic disintegration
ST_life-and-death_remembering-people-who-have-died
stock tank oil
styrene-acrylonitrile resin
surveyor's chain
theory of the Supreme Ultimate
three
throwins
tough-policy
trial-for-ignition period
Van Der Waals adsorption
variegated position effect
vibration modal frequency
vibration proofing material
wide-awakeness