风险扩大

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(180) / 评论(0) 分类 美丽新世界

By Nancy Steinbach Broadcast: October 1, 2003 This is Faith Lapidus with the VOA Special English Health Report. Scientists in Iceland say they have identified the first gene linked to common forms of

发表于:2018-12-15 / 阅读(216) / 评论(0) 分类 VOA2003(下)-环境与健康

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(191) / 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(199) / 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(260) / 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(213) / 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(206) / 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(209) / 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(254) / 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(226) / 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(174) / 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(174) / 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(306) / 评论(0) 分类 英语语言学习

BEIJING, May 10 (Xinhuanet) -- Researchers from California, Unated States, found that sexual orientation could play a role in cancer and more gay men are reported being cancer survivors(幸存者) than straight men, according to findings in the journ

发表于:2019-01-31 / 阅读(225) / 评论(0) 分类 英语新闻

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(234) / 评论(0) 分类 VOA常速英语2007年(十一月)

JOHANNESBURG, March 23 (Xinhua) -- Cervical cancer ranks as the second most frequent(频繁的) cancer among women in South Africa. Recent information from a World Health Organization (WHO) and ICO Information Center on Human Papilloma virus (HPV) an

发表于:2019-02-02 / 阅读(246) / 评论(0) 分类 英语新闻

BEIJING, June 27 (Xinhuanet) -- A lean gene that helps people keep slim was found closely related to diabetes and heart disease, according to a study pulished in Nature Genetics journal on Sunday. The scientists from Britains Medical Research Council

发表于:2019-02-08 / 阅读(429) / 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(274) / 评论(0) 分类 2018年科学美国人10月

If you don't exercise regularly(有规律的), a sudden bout of energetic activity can trigger a heart attack, and may even kill you, according to a new study published in JAMA, the journal of the American Medical Association. It sounds like the

发表于:2019-02-18 / 阅读(175) / 评论(0) 分类 英语新闻

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(235) / 评论(0) 分类 双语有声阅读
学英语单词
ampulla of savi
average production per well
b.h
Bang's disease
beam sling
beta-amino acid
Bol'shiye Mozhary
Bradley,Thomas
breakopen
Cassytha
chain line printer
circulation frequency of Hanzi
colescott
collection-plate
competence porn
concentration clarke
contango or making-up day
converted length
cotton dress
cric acid
crosslinkedpolymer
cylinder pile foundation
Delphinium sinoscaposum
divining
double traverse rate
dramamonger
dressing board
Eagletown
ectothrix spore
Edward Sapir
endogenic agency of soil erosion
exception word dictionary
exclusion and restriction of contractual liability
fakeAV
farani
five-dollar word
fledgling
galvanometer with optical point
gear planer cutter
greenspun
gyroscopic deflection
hakea lissospermas
haute-monde
hot air jacket
howdy-doody
jelly-fish (rhopilema esculenta )
Kamuro-san
kaway
laminin-5
Lan Nam
Laughlin Peak
lay one
limewoods
Loiron
millimetre wave amplifiers
mroseite
mtv
Mézenc, Mt.
non-cereal starch
non-profit-makings
Nouvelle-Calédonie
ocean tidal model
oral insulin
organismic psychology
otogenous brain abscess
oxyacetic
paracentrals
parait
pot-furnace
professional standard
pulmometr
Questembert
racketeer patriot
reckons with
register variables
reused numbers
rhetorology
saffil
sample system minaturization
semidrying
shaft seal drain
Shannon County
shrinkage of line
sign of lobulation
sissonne
sneak off to
sonant
speck and span
spread glass
storage cell
stylosteophyton
system of measuring units
to play ball with sb
tomato pulper
top log
Ventoline
way out of a paper bag
whole works
wind-powereds
window lead-in
women's-only