对比度放大

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(94) / 评论(0) 分类 美丽新世界

Improve Your Writing with Contrast and Concession For VOA Learning English, this is Everyday Grammar. Today we are going to talk about words that connect opposing ideas. We call these ideas contrast or concession. Some of these adverbs are but, altho

发表于:2018-12-08 / 阅读(83) / 评论(0) 分类 2016年VOA慢速英语(一)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(92) / 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(98) / 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(106) / 评论(0) 分类 2015年Scientific American(一)月

第一章 练习12:形成你自己的语调 Exercise 1-12 Create Your Own Intonation Contrast Exercise 1-12: Create Your Own Intonation Contrast Write a short sentence and indicate where you think the most normal intonation would be placed. Then, c

发表于:2018-12-27 / 阅读(80) / 评论(0) 分类 美式英语正音训练

[00:02.25]第四单元 [00:04.49]psychological [00:06.62]心理(学)的 [00:08.75]focus [00:10.23]集中 [00:11.70]basic [00:13.47]基本的 [00:15.23]principle [00:16.76]1.原理,原则2.主义,信念 [00:18.29]meaningfulness [00:19.96]有意义 [00:21.63]oranization [00:2

发表于:2018-12-29 / 阅读(159) / 评论(0) 分类 大学英语自学教程上

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(109) / 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(93) / 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(110) / 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(148) / 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(114) / 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(81) / 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(89) / 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(137) / 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(126) / 评论(0) 分类 VOA常速英语2007年(十一月)

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(114) / 评论(0) 分类 2018年科学美国人10月

雅思写作核心句型80句(2) 21.In contrast, 22.By contrast, 23.On the contrary, 24.Whether depends on whether 25.It is wrong to assume that 26.When it comes to something, 27. for the reason that 28. for the simple reason that 29.For one thin

发表于:2019-02-18 / 阅读(143) / 评论(0) 分类 雅思英语

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(120) / 评论(0) 分类 双语有声阅读

1.It is reported that 2.It is estimated that 3.It must be stressed out that 4.Nothing has received more praise and abuse than something. 5.Something leave much to be desired. 6.A is to B what C is to D. 7.Never has something failed to fascinate us in

发表于:2019-03-02 / 阅读(119) / 评论(0) 分类 雅思英语
学英语单词
advice cards
amity point
asshairs
axolotl
blank cheques
Bretzenheim
brichta
Burda, C.
Carex montis-wutaii
chazy
chemical processing of coal
chevronwise
chmura
civic journalism
class A fire
color revolutions
contaiminator
coordinative valency
cytogeneticists
decidua plate
district haulage conveyer
environmental electromagnetism
environmental protection science
err on the safe side
evenness indices
excision of chemodectoma
exonumia
extranet
exuscitated
film-noir
flexible casing
fricatized
full limit load
full width scouring machine
FWT
glover's suture
granular deposit
gravitt
great slave lakes
ilbaite
intensity-scale
jurate
Ketelmeer
law lord
logic state indicator
low-grade cement
lumbritin
magasin
many happy returns of the day
mean molal heat capacity
meim
Methotrexat
mirror-lined
mitnick
monitrices
mortgage banking
multicorporate
multiplepoing
National Liberation Front of Corsica
new idea
no-brow
nondigestible
numher
nustagmogram
oligophrenia
overapplied overhead
Pecht
pedal regulating motion
pentologenin
phosphatidylserine decarboxylase
pisses someone off
radices euphorbiae fischerianae
ribbon-weaver
safety record
scrimptions
sea floor morphology
segregation of exposure unit
sell a thing by auction
shift and rotate instructions
shore gantry crane
short gluten
state tax
static attribution
sterilized crucible
sub-ject
temporary workers
thalamita poissonii
thoughtcrimes
three-state logic circuit
tolerable radiation exposure
total mean increasing
trades
unanalogical
unchauffeured
under-writings
ungalvanized iron and steel
usnea pangiana hondoensis
watchlike
water fountains
water spinach
wheat yellow dwart
yolk bag