视放大率

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(151) / 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(162) / 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(177) / 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(235) / 评论(0) 分类 2015年Scientific American(一)月

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(184) / 评论(0) 分类 TED演讲科学篇

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(177) / 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(173) / 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(228) / 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(194) / 评论(0) 分类 2012年VOA慢速英语(一)月

By Jessica Berman Washington 24 May 2007 Scientists have always thought that babies learn language by hearing them, but a new study provides evidence that infants as young as four months can distinguish between different languages being spoken by usi

发表于:2019-01-13 / 阅读(184) / 评论(0) 分类 2007年VOA标准英语(五月)

'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(141) / 评论(0) 分类 VOA标准英语2012年(一月)

Hollywood Visual Effects Go Global 好莱坞视觉特效走向世界 LOS ANGELES Many of todays Hollywood blockbuster movies include stunning visual effects. Most of those effects used to be produced in Hollywood, but that has changed. Now, one film

发表于:2019-01-14 / 阅读(165) / 评论(0) 分类 VOA标准英语2014年(五月)

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(151) / 评论(0) 分类 TED演讲国际问题篇

_______1________? What? The sunrise. Terrific. No! Houston, Dr. Stone is off structure! Listen to my voice! _______2_______! I can't! I'm losing visual of you. _______3_______! I can't breathe! Grab ahold, grab anything! What do I do? What do I do? N

发表于:2019-01-23 / 阅读(206) / 评论(0) 分类 英文电影预告片填空

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(246) / 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(206) / 评论(0) 分类 VOA常速英语2007年(十一月)

激光矫正近视后遗症多多 Optical experts in Shanghai have reassured patients that laser eye surgery, or LASIK (laser-assisted in situ keratomileusis), is the safest method to treat adult myopia, following a leading Taiwanese eye doctor said

发表于:2019-02-05 / 阅读(189) / 评论(0) 分类 实用英语

LOS ANGELES Many of todays Hollywood blockbuster movies include stunning visual effects. Most of those effects used to be produced in Hollywood, but that has changed. Now, one film can include visual effects produced in many different countries. Tomm

发表于:2019-02-06 / 阅读(177) / 评论(0) 分类 英语新闻

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(231) / 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(198) / 评论(0) 分类 双语有声阅读
学英语单词
Acecolex
Adamkiewicz reaction
adjustable stabilizer fin
alkyl fluoride
aluminohydrides
anaerobic contact digester
automobile tail light
babe in arms
belcastroes
bisect method
bismarch brown
canon of marine transgression
caracolled
cfbci
cheese-grater
clarifioccuiation
colica aeruginis
continuous review model
continuous transmission by series
cover dividend
cubital supplement
d-quebrachamine
de-aestheticisation
dead embrace
dimoxyline
Dioscorides's granules
disk cluster
doctorling
downhill of life
extended port
foreign currency payment instruments
genus Crataegus
grain tears
guitarrn
Hassin's syndrome
HDMI Mini
hedquist
high band program dubbing system
high-income
Holweck valve
horror-flick
incompatible crosspoints
inventory measures
jaw-winking phenomenon
joues
lehmannite
lightning arrester gap
live splint
longleaf pine oil
lossless transmission
microclimate
motor gasoline (mogas)
open path expression
orchestration
otieno
outtraveling
overtime goods
oxide-film
palaeobiologies
panacen
parachute release
passenger cargo vessel
Pediaflor
Pedicularis striata
petropedetid
phisical drive
Phālia
piccies
pick sb's brains
piston-type expander
prediscovery
pull one's rank on
radio robot level-meter
Rawfola
reaffirming
riyan
sacerdotiums
Salsipuedes
SC-29333
self maintained discharge
sharp cutoff filter
shoulder off
sickhouses
silica crucible
soil crack
spurned
staned
tax carryback
thewed
thrice-monthly
Triptizol
true wind
twin type cable
type-specific(antibodies)
unmould
Urmia, Lake
wadges
wages in kind
weld toe
white lead ores
Zizylphus vulgaris