基本放大率

[00:00.00]Chapter 7 [00:00.91]第七章 [00:01.83]Computer Virus [00:03.17]计算机病毒 [00:04.52]Dialogue 1 [00:05.56]句型1 [00:06.61]A: Do you have virus protection software on your PC? [00:09.51]你的电脑有防毒软件吗? [00:12.41]B:N

发表于:2018-12-05 / 阅读(203) / 评论(0) 分类 电脑英语

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(142) / 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

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

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

'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)

DAVID GREENE, HOST: The big three airlines - American, Delta and United - are taking on discount carriers like Spirit and Frontier by offering no-frills discounted fares called basic economy. Some are calling it misery class because among other thing

发表于:2019-01-16 / 阅读(158) / 评论(0) 分类 2017年NPR美国国家公共电台3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(119) / 评论(0) 分类 TED演讲国际问题篇

Basic Military Commands Marta: Whats going on out here? Whats all that noise? Bruno: Im putting the troops through their drills. Marta: Troops?! Bruno: Watch this. Hey, I didnt tell you you could be at ease. Attention! Fall in. Forward, march! Marta:

发表于:2019-01-23 / 阅读(211) / 评论(0) 分类 2014年ESL之日常生活

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)

May 1 marks the 50th anniversary of a special computer language aimed at enabling college students not trained in mathematics to use computers. The birth of BASIC is now seen as a major step toward the era of personal computers. 50 years ago, compute

发表于:2019-02-05 / 阅读(187) / 评论(0) 分类 英语新闻

By Douglas Bakshian Manila 06 May 2008 A new report says the lives of millions of young children could be saved each year if basic medical care and medicine are made available to the poor. Douglas Bakshian has more from Manila. The report by the U.S.

发表于:2019-02-05 / 阅读(172) / 评论(0) 分类 VOA标准英语2008年(五月)

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(184) / 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
'ands
-di
7-hydroxylethylthioethyldeoxyguanosine
a-quarter
Abernethy's sarcomas
Actemil
Agri.
airglow spectrograph
albumin microparticle
alphabetic script
amphibolite facies
annual expense
apolytikion
ariculator condylar slot
augural
ballistic (air) density
be put into prison
be suppose to
Berthollet,Claude Louis
buzzeth
calculus uric acid
cataphylaxis
Chaganuzun
chain-sawing machine
chrominance carrier signal
cinnamomi
collarless
contingent legacy
cost of pre investment studies
couldn't've
counter-clerks
de praesenti
diamond-mesh lath
differential windlass
Dionysius the Elder
display writer
double extraction
Duodenomesocolic
edger
escalation-of-force
essential inorganic ion
extradited
faddom
flag bit
fluorescence resonance energy transfer
glass stress
grab used in water
gullers
hemidemisemiquaver rest
hemp scutcher
hydrastine hydrochloride
hypogenetic nephritis
instruction memory
invariant statistic
inwrapping
jonit
Kara-Kirghiz
kobaltkies (linnaeite)
laboratory practice
Lansjärv
Lemurophoenix
lobuloalveolar
long sleeve knob
market-moving
melon-hole
meriwether lewiss
middlemass
missile roof
moenomycin
multi-machine operation
multitrack head
Nannoglottis carpesioides
Narooma
nicotined
ninepin block
nitrite ester
octadecyl palmitate
off hand
Pentium II
phragmites marsh
pollution index
preliminary remarks
puddley
qualitative method
rising reagent gas
semi permanent
separation deed
skolochorate
soft-wood board
specific adsorptive capacity
steady state of motion
stinking hellebores
tachypneic
tinning furnace
uncertain interpretation
under pretense
visorum
wheel-slip
wheelhorse
wott
yuppie syndrome
Zaïre Supérieure, Reg.