台式激光器

VOICE ONE: I'm Steve Ember. VOICE TWO: And I'm Barbara Klein with Explorations in VOA Special English. Today we tell about a large National Park established to protect the culture of ancient Native Americans. It is called Mesa Verde. (MUSIC) VOICE O

发表于:2018-11-27 / 阅读(439) / 评论(0) 分类 VOA慢速英语2008年(十二)月

STEVE EMBER: Im Steve Ember. BARBARA KLEIN: And Im Barbara Klein with EXPLORATIONS in VOA Special English. Today we tell about a large National Park established to protect the culture of ancient Native Americans. It is called Mesa Verde. (MUSIC) STEV

发表于:2018-12-07 / 阅读(48) / 评论(0) 分类 2011年VOA慢速英语(三)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(84) / 评论(0) 分类 VOA常速英语2008年(四月)

National Parks Called Americas Best Idea Welcome to This Is America in VOA Learning English. I'm Jim Tedder. And I'm Kelly Jean Kelly. This week on our program, we talk about national parks in the United States. The United States established its firs

发表于:2018-12-16 / 阅读(65) / 评论(0) 分类 2013年VOA慢速英语(七)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(71) / 评论(0) 分类 2013年VOA慢速英语(二)月

AS IT IS 2016-06-20 Green Card Holder Deported Mickel Mesa, a 28-year-old legal permanent resident of the United States, had not seen his family in the Dominican Republic for many years. So, in December 2013, he and his sister flew to the Caribbean n

发表于:2018-12-16 / 阅读(64) / 评论(0) 分类 2016年VOA慢速英语(六)月

EXPLORATIONS - Mesa Verde National Park in Colorado: Protecting the Culture of Ancient Native AmericansBy Marilyn Christiano and Shelley Gollust Broadcast: Wednesday, May 24, 2006 (MUSIC) VOICE ONE: I

发表于:2019-01-02 / 阅读(63) / 评论(0) 分类 2006年慢速英语(五)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(84) / 评论(0) 分类 2017年VOA慢速英语(七)月

Life was not easy when Emma Seguy first arrived in Mesa, Arizona. The 20-year-old was born in Paris, France. But when she was 16, she decided she wanted to be more independent and to try something new. So, Seguy asked her parents if she could complet

发表于:2019-01-03 / 阅读(87) / 评论(0) 分类 2018年VOA慢速英语(六)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(115) / 评论(0) 分类 2013年VOA慢速英语(五)月

EXPLORATIONS - Mesa Verde National Park: Protecting the Culture of Ancient Native Americans STEVE EMBER: Im Steve Ember. BARBARA KLEIN: And Im Barbara Klein with EXPLORATIONS in VOA Special English. Today we tell about a large National Park establish

发表于:2019-01-12 / 阅读(68) / 评论(0) 分类 2012年VOA慢速英语(四)月

National Parks Called Americas Best Idea 今日美国美国国家公园 Welcome to This Is America in VOA Learning English. I'm Jim Tedder. And I'm Kelly Jean Kelly. This week on our program, we talk about national parks in the United States. The Uni

发表于:2019-01-12 / 阅读(65) / 评论(0) 分类 2013年VOA慢速英语(十)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(84) / 评论(0) 分类 2012年VOA慢速英语(一)月

Mesa Verde National Park: Protecting an Ancient Culture 梅萨维德国家公园:古代北美洲土著人文化的保护地 EDITOR'S NOTE: This year, the U.S. National Park Service turns 100. Americans 28th President, Woodrow Wilson, formed the Natio

发表于:2019-01-12 / 阅读(47) / 评论(0) 分类 2016年VOA慢速英语(四)月

The answer lies in the effects of North Americas immense and fluctuating ice sheets. As they grew, they locked up so much water that the sea levels began to fall. The Bering Sea between Asia and North America began to drain away, leaving a bridge of

发表于:2019-01-23 / 阅读(55) / 评论(0) 分类 探索与发现2012年

But back then, they had serious competition from the giant short-faced bear. The short-faced bears bone chemistry reveals it was a carnivore and up to a ton, probably the largest meat-eating mammal that ever walked the earth. On its long legs, it ran

发表于:2019-01-23 / 阅读(78) / 评论(0) 分类 探索与发现2012年

Chapter Seven 第七章 The mesa was like a ship becalmed in a strait of lion-coloured dust. 崖顶螈像一艘静静旋泊在狮子黄的海湾边的船。 The channel wound between precipitous banks, and slanting from one wall to the other across t

发表于:2019-01-29 / 阅读(50) / 评论(0) 分类 美丽新世界

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(100) / 评论(0) 分类 VOA常速英语2007年(十一月)

Topics: Redshirting; Mesa Verde National Park; to wrap up; to bother versus to interrupt versus to disturb; blind spot Words: to redshirt to count toward kindergarten cutoff to hold back peer prevalence cliff dwelling outcropping cave artifact to wra

发表于:2019-02-15 / 阅读(48) / 评论(0) 分类 美语听力 English Cafe

I think there are a lot of reasons, but I first want to address the one that you're probably most likely to have heard of, 我觉得理由很多,但是我首先想要弄清一个概念,可能大家也都听过, because actually it's more danger

发表于:2019-03-16 / 阅读(250) / 评论(0) 分类 TED演讲科学篇
学英语单词
a poon
A tent
absorption water
actuarial table
Alasin
alicycle
amidrazone
apogranite
attribution model
autocatalysts
avian-flu
bastard fount
Beaconsfield
bench-drill
boat bearer
bolillos
bresaolas
Bupleurum longicaule
cage hydraulic press
carbide insert bit
Catcher in the Rye
centimoes
channel decoder
comma construction
contact reliability inspection
cotton-enamel covered wire
course
Critesion
crystal tea
decontraction
demolition of property
Deuteronomic, Deuteronomical
deviation of borehole
DIIC
distance of relative movement
distesol
dividend payout ration
duquesnel
equivalent bar
error status register
family Rhinolophidae
gang seeder
general recursive predicate
geographic proximity
gridpoints
GVE
have a peep ab sb
have something on one's shoulders
hereditary predisposition
HF-24
high pressure turbine bypass
hobnail
icker
ignition residue
intermediate preference targets
irenina malloticola
Kannose-gawa
lameller tearing
leave one's card upon someone
left-click
level of organization
library member
man of quality
mangadom
mesomeric theory
miniaturizes
moneymaking
moral duty
moving speed of table
noise level
north land (severnaya zemlya)
Orroroo
outdoor motor
ovonic threshold switch
partial solid solution
partner's capiatl
perissus asperatus
personal computing conference
photoelectric photometer
pillar shaping machine
placentotrophy
Planchonella obovata
plex structure
primary safety valve for inner container
project production
rekles
sample pulse phase
Shentoo's line
sinaed
spring for air pump
stewed
suck-boy
takehome
thermal decomposition method
transmission standards
ultrasonic test method
UNRPR
UVPROM
uvular diastematia
walkback
weirty
workcentre