声电放大

Splendid! He kept his telescopic cameras carefully aimedglued to their moving objective; 精彩片他小心地调着望远摄影机的镜头,盯紧了那移动着的对象。 clapped on a higher power to get a close-up of the frantic and distorted

发表于:2018-12-07 / 阅读(122) / 评论(0) 分类 美丽新世界

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(127) / 评论(0) 分类 2013年VOA慢速英语(二)月

BBC News with Julia Candler. A senior member of North Koreas government has warned that his country would react with a pre-emptive nuclear strike if it saw signs that the US was preparing to launch an attack. Speaking to the BBC, the Vice Foreign Min

发表于:2018-12-20 / 阅读(143) / 评论(0) 分类 中英双语新闻

This is Scientific American's 60s Science. I'm Karen Hopkin. This will just take a minute. Think about the tools used by biologists, perhaps test tubes and microscopes come to mind. But what about diapers? No, it's not the investigators in their work

发表于:2018-12-24 / 阅读(170) / 评论(0) 分类 2015年Scientific American(一)月

Douglas MacArthur: Born to Be a SoldierWritten by Paul Thompson (MUSIC) ANNCR: Now, the VOA Special English program PEOPLE IN AMERICA. Today Rich Kleinfeldt and Sarah Long tell about one of the most unusual and successful American military leaders, G

发表于:2019-01-02 / 阅读(143) / 评论(0) 分类 名人轶事

In my lab, we recently made a cancer nanodetector 在我的实验室,我们最近研制出了一种癌症纳米检测器, that is so small that it could travel into the body and look for tumors. 小到可以进入全身血液循环并寻找肿瘤。

发表于:2019-01-03 / 阅读(145) / 评论(0) 分类 TED演讲科学篇

DEVELOPMENT REPORT - April 8, 2002: Tobacco in Developing Countries By Jill Moss This is the VOA Special English Development Report. Tobacco smoking has long been considered an international health pr

发表于:2019-01-07 / 阅读(126) / 评论(0) 分类 农业与发展

PCRthe polymerase chain reactionis a crucial tool. The DNA amplification technique is used in genome sequencing, forensics and the diagnosis of various diseases. To give researchers more genetic material to work with, a PCR instrument repeatedly heat

发表于:2019-01-08 / 阅读(139) / 评论(0) 分类 Scientific American(十)月

This is Scientific American 60 Second Science, I am Karen Hopkin, this will just take a minute. Every year, about 10 million tons of paper winds up in American landfills and incinerators, which is not only wasteful but adds CO2 to the atmosphere. Rec

发表于:2019-01-08 / 阅读(142) / 评论(0) 分类 Scientific American(三)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(187) / 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(161) / 评论(0) 分类 2012年VOA慢速英语(一)月

By Sabina Castelfranco Rome 24 August 2006 Israeli Foreign Minister Tzipi Livni says U.N. resolution 1701, aimed at ending the conflict between Israel and Hezbollah in Lebanon, needs to be implemented quickly so that a new era can begin in Lebanon.

发表于:2019-01-13 / 阅读(193) / 评论(0) 分类 2006年VOA标准英语(八月)

By Zulima Palacio Austin, Texas 20 January 2006 watch Suspension report Electric suspensions offers more stabilility One day, exhausting car rides over bumpy terrain, with all the dangers and damaging

发表于:2019-01-13 / 阅读(217) / 评论(0) 分类 2006年VOA标准英语(一月)

'Word on Street' Impacted Language in 2011 While 2011 is over, some of the words that came to define the past year are still very much with us, and may be for years to come. Since 2011 was an especially busy year for grassroots political action, many

发表于:2019-01-13 / 阅读(109) / 评论(0) 分类 VOA标准英语2012年(一月)

Because of course, the ear is, I mean, subject to all sorts of things. 这当然是因为,我是说,耳朵受制于很多因素。 The room we happen to be in, the amplification, the quality of the instrument,the type of sticks...etc., etc. 我们现

发表于:2019-01-18 / 阅读(120) / 评论(0) 分类 TED演讲国际问题篇

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(182) / 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(163) / 评论(0) 分类 VOA常速英语2007年(十一月)

By Jim Malone Washington 04 December 2006 The U.S. Supreme Court heard oral arguments Monday challenging the right of local school systems in Washington state and Kentucky to carry out voluntary plans that promote racial integration. The high court

发表于:2019-02-06 / 阅读(202) / 评论(0) 分类 2006年VOA标准英语(十二月)

Nobel in Physics for Controlling Laser Light 诺贝尔物理学奖颁给激光控制实验者 The main practical application of CPA so far has been in the eye surgery. It was the first one, and I think it is the one that is used by the most people fo

发表于:2019-02-14 / 阅读(186) / 评论(0) 分类 2018年科学美国人10月

The Revolution in American Higher Education To produce the upheaval in the United States that changed and modernized the domain of higher education from the mid 1860's to the mid 1880's, three primary causes interacted. The emergence of a half dozen

发表于:2019-02-25 / 阅读(156) / 评论(0) 分类 双语有声阅读
学英语单词
absorbing centres
acryloyl chloride
aeromotor
Aftassa
anaphylactic response
anthropophagite
basarcus
bda
bible leaves
boss about
bucket type fan
carnsore
cessfords
chiasms
chromium depletion
conversion-electron emission
defecation factory
direct deamination
dozepers
drinking-cups
electromelting
Enaville
Estagno Pt.
everyday-low-price
exposure hole
exterminators
extra linguistic
failure go-to field
feast-and-famine
flee from
forest management rules
geostationary opertional environmental satellite (goes)
gingerrace
Godolinite-(Y)
grid-controlled colour kinescope
gunzipping
henbits
hgdrous
high speed thread cutting attachment
interform reliability coefficient
Iran, Peg.(Iran Mountains)
Khonsa
kissas
legal thoughts in Chinese history
legitimators
lightness scale
limeyard waste
lovelier
Makgalo
matching theorems
mercapto-compound
microclase
mounties
nethergarment
nonsquare matrix
O. T. C.
on carrier
onon(onon gol)
overall benefit
page-turnings
pantothens
passeri
peritumoural
Pesaguan, Sungai
pharyngoglossal
polyphase line
quadriradiatus
radioactive source shielding
rake of stylus
redbacks
removing wood on wheeled conveyances
road dust
rubidium bisulfate
Sarason's ozet bath
school medical officer
self-signed certificate
service 1
shellac calculus
solid flat metal gasket
sound operation
specularite
Stone transmission bridge
strict lower bound
Suaeda dendroides
sunset industries
synchronous separation
temperature extremes
test session
torridity
torsion seismometer
transport ball screw
transverse processes
triplicated plot test
Tuaran
Tushino
typing into
URTI
Veitch Anthurium
water tight compartment
wheel bar
ydede