[网络] 有效辐出度;有效辐射出射度

There are six characteristics of speech, all of which are vital to speak effectively. In this section we'll look at each of them separately. These speech characteristics are basically important to you

发表于:2018-11-28 / 阅读(227) / 评论(0) 分类 疯狂英语2001年

BY STEPHEN R .COVEEY The first habit is 1)proactivity. Be proactive. The word proactivity is fairly common in management literature, but you won't find it in the dictionary. It means more than merely

发表于:2018-11-28 / 阅读(268) / 评论(0) 分类 疯狂英语2001年

This is the VOA Special English Agriculture Report. 这里是美国之音慢速英语农业报道。 Japan's nuclear crisis may mean greater demand for imported food and less competition from Japanese products on world markets. But it also means that

发表于:2018-12-07 / 阅读(112) / 评论(0) 分类 2011年VOA慢速英语(三)月

Doctors use X-rays to view internal organs, obtain clear images of possible disease and to treat cancer. For years radiation has been used to save lives, but there is growing concern that some patients are getting more than they ask for when they und

发表于:2018-12-08 / 阅读(142) / 评论(0) 分类 VOA标准英语2010年(一月)

This is the VOA Special English Health Report. The crisis at the damaged Fukushima Dai-Ichi Nuclear Power Station in northern Japan has raised worries about radiation risks. We spoke Tuesday with Jonathan Links, an expert in radiation health sciences

发表于:2018-12-16 / 阅读(119) / 评论(0) 分类 2011年VOA慢速英语(三)月

By Melinda Smith Washington 31 August 2007 Centuries ago doctors used hypnosis to help relieve the excruciating pain of surgery. It then fell out of favor with the introduction of anesthesia. Now as VOA's Melinda Smith reports, new studies show a hos

发表于:2018-12-16 / 阅读(185) / 评论(0) 分类 2007年VOA标准英语(八月)

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Animals rely on all sorts of cues to find their next meal. Monkeys and birds are attracted to the colors of ripe fruits and berries. And snakes find thei

发表于:2018-12-24 / 阅读(144) / 评论(0) 分类 Scientific American(十)月

Human exploration of Mars is now an official goal of the National Aeronautics and Space Administration (NASA). Last month, U.S. President Donald Trump signed a bill to increase NASAs budget. The law sets spending at $19.5 billion for the 12-month per

发表于:2019-01-02 / 阅读(129) / 评论(0) 分类 2017年VOA慢速英语(四)月

By Jessica Berman Washington 14 May 2008 Researchers have determined that commonly prescribed triple-drug combination therapies that use old antiviral drugs are the most effective for suppressing the deadly virus that causes AIDS. The findings have m

发表于:2019-01-09 / 阅读(156) / 评论(0) 分类 VOA标准英语2008年(五月)

U.S. health experts monitoring Japan's nuclear crisis are seeking to explain health risks from radiation(放射) exposure, while cautioning that radiation levels measured this week at the Fukushima-Daiichi power plant in northern Japan have not y

发表于:2019-01-11 / 阅读(161) / 评论(0) 分类 英语新闻

DOUG JOHNSON: This is SCIENCE IN THE NEWS, in VOA Special English. I'm Doug Johnson. FAITH LAPIDUS: And I'm Faith Lapidus. Today, we will tell about skin cancer. (MUSIC) DOUG JOHNSON: Skin cancer is one of the most common forms of cancer. It is also

发表于:2019-01-11 / 阅读(246) / 评论(0) 分类 2010年VOA慢速英语(七)月

Japanese Town Split by Radiation Evacuation Zone It is an extraordinary meeting of the Kawauchi village assembly. Because of severe damage to the village's municipal hall from the earthquake, the public gathering has been convened at a community cent

发表于:2019-01-13 / 阅读(139) / 评论(0) 分类 VOA标准英语2012年(三月)

Japan raised the severity of the Fukushima nuclear crisis from four to five on a seven-point scale of international nuclear events. Fears of radiation exposure has caused a run on salt products all across the region, including in China, where shopper

发表于:2019-01-14 / 阅读(165) / 评论(0) 分类 VOA标准英语2011年(三月)

GUY RAZ, HOST: I want to ask you about this really famous Talmudic notion - actually, it might be that in the Quran as well - but this idea that, you know, if you save a single life, then you have saved all of humanity. You know that one? PETER SINGE

发表于:2019-01-17 / 阅读(133) / 评论(0) 分类 2017年NPR美国国家公共电台5月

The World Health Organization (WHO) warns against the indiscriminate(任意的无差别的) use of potassium iodide as a precaution against nuclear radiation. WHO is issuing this advisory following reports of people in Japan and elsewhere who are usi

发表于:2019-02-06 / 阅读(294) / 评论(0) 分类 英语新闻

A key Japanese adviser on radiation(放射 ) leaks at the country's disabled Fukushima nuclear power facility has quit in protest over the government's handling of the disaster. The adviser, Toshiso Kosako, a radiation safety expert at the Univer

发表于:2019-02-06 / 阅读(155) / 评论(0) 分类 英语新闻

NEW DELHI, March 16 (Xinhua) -- The Indian government has ordered food originating from(发源于) Japan to be tested for radiation in the wake of explosions at a Japanese nuclear plant following a devastating earthquake-tsunami last Friday, repo

发表于:2019-02-07 / 阅读(141) / 评论(0) 分类 英语新闻

Public opinion polls suggest most Americans favor full body scanners as a way to protect against terror attacks on commercial airliners. The benefits of scanners are being debated in a number of countries. Some groups have raised privacy issues. But

发表于:2019-02-07 / 阅读(127) / 评论(0) 分类 VOA标准英语2010年(一月)

WASHINGTON, March 30 (Xinhua) -- A trace amount of radioactive(辐射性的) iodine(碘) has been found in a sample of milk from the west state of Washington, the U.S. Environmental Protection Agency and the Food and Drug Administration (FDA) sai

发表于:2019-02-11 / 阅读(153) / 评论(0) 分类 英语新闻

Scientists at the U.S. Food and Drug Administration disagree about the risks from CT scans given during virtual colonoscopies. Doctors who favor the procedure say it is less invasive and more cost effective than a conventional colonoscopy. Those agai

发表于:2019-02-12 / 阅读(126) / 评论(0) 分类 VOA标准英语2010年(四)月
学英语单词
airborne interrogator
anatomical microscope
antipatriots
aphetized
apla
apple-john
as a complete unit
as things are
at some time or other
backporting
be great on
before someone's very eyes
begonia socotranas
biparous cyme
British citizenship
bubble nucleus
butacaines
carbonate-Whitlockite
card design feature
chickenizing
circummures
cirrimaxilla formosa
conjunction of successive photographs
constellation pathology
cooling load temperature
corporate bonds
cumulative bibliography
curry rice
Czerny's disease
deamination
Desmodium elegans
devulgarization
Diacetyl-benzoyllathyroI
Donggeochado
double precision automatic interpretive system 201 (daisy 201)
dual allegiance
elliptic-nosed cylinder
English lavender
expulsive gingivitis
furfenorex
glial
Gormaz
H share
handpike
have the end upon
height of loading
heterocercal
honey filter
incidence of poverty
informal runway use program
italiani
kindermann
lipomatosis gigantea
LTA
lupe
Malthus, Thomas Robert
marked symbol
mesonephric ridge
mirror foci
myocardial injury
neodymium-vanadium glass
ophidion
overcompaction
Oweniidae
ozone resistant insulation
paleyellow
parallel equal crank linkage
phaenocarpa cameroni
prestidigitators
PWBRT
radio frequency standard
rebound relationship
reclaim vulcanizate
rent strikes
rogozhins
roughing it
running requirements
Russian roulette
Savos'kin
screwed connection
Senarmont polarimeter
sensorial idiocy
septembres
ship dunnage
Silene multifurcata
stock turnover
Suboccipitofrontal
swine diphtheria
switchboard operators
tantalizing
tauty loom
thou
transformer platform
transparent celluloid
uncometary
uncostliness
underwater scattering meter
united pistil
urites
USPACAF
water-resistant
wax dope