氟乙烷和二氯四氟乙烷喷雾剂

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发表于:2018-12-03 / 阅读(289) / 评论(0) 分类 20本英文音韵童谣小书(文本+音频)

AS IT IS 2014-05-25 Scientists Search for New Ways to Stop Mosquitoes 科学家们寻找新的方法来对付蚊子 The sound of a mosquito can mean trouble in many parts of the world. The bite of a mosquito can be deadly. Today, we will hear about s

发表于:2018-12-08 / 阅读(175) / 评论(0) 分类 2014年VOA慢速英语(五)月

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发表于:2018-12-10 / 阅读(129) / 评论(0) 分类 牛津阅读树ORTMP3(1-11级)

美科学家研发新一代驱蚊剂 In many regions of the world, mosquitoes are a seasonal pest. In other regions, they carry serious diseases like malaria. The World Health Organization estimates that almost 630,000 people died of malaria-related

发表于:2018-12-19 / 阅读(130) / 评论(0) 分类 VOA双语新闻 2014年1月

1. fluid /ˈflu:ɪd/ -- 1. substance that flows 2. not rigid; changing easily Air, water, molasses and milk are all fluids. 空气、水、糖蜜和牛奶都是流体。 During November, the military situation remained fluid, with advances and retres

发表于:2018-12-30 / 阅读(153) / 评论(0) 分类 突破英文词汇

by Michael W. Flynn First, a disclaimer: Although I am an attorney, the legal information in this podcast is not intended to be a substitute for seeking personalized legal advice from an attorney licensed to practice in your jurisdiction. Further, I

发表于:2018-12-30 / 阅读(190) / 评论(0) 分类 法律英语 Legal Lad

PEOPLE IN AMERICA - Great Writers: Flannery O'Connor Told of Small-Town Life in the South By Richard Thorman Broadcast: Sunday, July 10, 2005 (MUSIC) VOICE ONE: I'm Shirley Griffith. VOICE TWO: And I'

发表于:2019-01-04 / 阅读(140) / 评论(0) 分类 People in America

Summit of Americas' Final Declaration Reflects Disagreements Greg Flakus In Monterrey , Mexico leaders of 34 nations from the Western Hemisphere , including President Bush, ended a two-day special Sum

发表于:2019-01-11 / 阅读(129) / 评论(0) 分类 VOA2004(上)--各类新闻

By Carolyn Weaver New York City 19 July 2007 A new documentary by director Benson Lee, Planet B-Boy , is about a dance form called b-boying, or break dancing. Invented on the streets of New York in the early 1970s by black and Latino youths, its beco

发表于:2019-01-12 / 阅读(177) / 评论(0) 分类 2007年VOA标准英语(七月)

Promising Mosquito Repellent Announced美科学家研发新一代驱蚊剂 In many regions of the world, mosquitoes are a seasonal pest. In other regions, they carry serious diseases like malaria. The World Health Organization estimates that almost 6

发表于:2019-01-14 / 阅读(128) / 评论(0) 分类 VOA标准英语2014年(一月)

One Police stops on police vehicle outside one Victoria's Bar. After the preparation, as necessary arrests?, this liquor drive slightly mixes. Suddenly he sees to have a young people shakely goes out from bar, spend the many figures only then finds

发表于:2019-01-17 / 阅读(103) / 评论(0) 分类 白领英语晨读

MADRID, June 3 (Xinhua) -- With days away from the Euro 2012 opener, a police raid on Italy's pre-tournament training camp cast shadow on the team's fate. Well-known defender Domenico Criscito was handed a search warrant as part of an investigation i

发表于:2019-02-03 / 阅读(115) / 评论(0) 分类 英语新闻

KIEV, April 23 (Xinhua) -- Ticket for the Euro 2012 Soccer Championship was officially presented on Monday by UEFA Events executive Martin Kallen in the Ukrainian capital Kiev. Representatives of UEFA and Ukraine's tournament executing committee atte

发表于:2019-02-03 / 阅读(146) / 评论(0) 分类 英语新闻

Working women who thought they might live to see Britain's pay gap finally shorten will have to hold out for another 57 years, according to a research published on August 19. Forty years after the Equal Pay Act was passed, the study showed that the g

发表于:2019-02-04 / 阅读(110) / 评论(0) 分类 阅读空间

The Flies and the Honey-PotA NUMBER of Flies were attracted to a jar of honey which had beenoverturned in a housekeeper's room, and placing their feet in it,ate greedily. Their feet, however, became so smeared with thehoney that they could not use th

发表于:2019-02-08 / 阅读(182) / 评论(0) 分类 英语美文

On its website, a history of the company makes no mention of leador indeed of Thomas Midgleybut simply refers to the original product as containing a certain combination of chemicals. 在它的网站上,公司的历史没有提及铅──也没有提

发表于:2019-02-17 / 阅读(127) / 评论(0) 分类 万物简史

By counting back through these layers and measuring the amount of lead in each, he could work out global lead concentrations at any time for hundreds, or even thousands, of years. The notion became the foundation of ice core studies, on which much mo

发表于:2019-02-17 / 阅读(142) / 评论(0) 分类 万物简史

Lead is a neurotoxin. Get too much of it and you can irreparably damage the brain and central nervous system. Among the many symptoms associated with overexposure are blindness, insomnia, kidney failure, hearing loss, cancer, palsies, and convulsions

发表于:2019-02-17 / 阅读(140) / 评论(0) 分类 万物简史

By Delia Robertson Johannesburg 23 October 2007 South Africa's rugby world-champion, the Springboks, have returned home to a rapturous welcome following their victory over England at the Rugby World Cup in France. VOA's Delia Robertson reports from J

发表于:2019-02-17 / 阅读(158) / 评论(0) 分类 2007年VOA常速英语(十月)

If you were going to a restaurant and wanted a healthier option, 如果你去饭店,你想吃得健康一点, which would you choose, grilled or fried chicken? 你会选择哪种食品呢,烤鸡还是炸鸡? Now most people would answer grill

发表于:2019-02-21 / 阅读(156) / 评论(0) 分类 TED演讲教育篇
学英语单词
abelmosks
access block
accumulative
ammonia emulsion
Androsace paxiana
annalizing
arteriovenous malformation of bowel
arthrotomy
atmospheric radioactivity
back-door influence
banjo fitting
bilirubin
bill payable to a specified person only
blank code
bose particle
brass-plated mild steel round bead wood screw
brotill
casure
centroid of a free tree
cheloniidaes
circumfodient
clothes-brushes
codebases
coefficient of reflection
contingent valuation
cross-section diagram
deoxyribonucleohistone
diphotic
disease due to normal senile changes
ditomyiid
downy ground cherries
dry painting
earth circuit
edmas
eurybrachid
falco sparveriuss
family Cephalotaceae
ferric vanadate
flight control office
gazooka
geometric quantization
germplasm collection
ground-covering
group model
gymnothorax flavimarginatus
himu
holonyms
horn dance
in the cart
internal focussing telescope
isohydria
krusevac
laser surveying
limited sense
lithocarpus fordianus chun
lsi technologies
made a production of
malodors
meaulne
medium head hydropower station
melon-headed
mycologia
neonatal death rate
noble-lie
novocaine block
null-manifold
opaqued
oxygen fugacity
pipe and tabor
pressure grease
pustema
raid
ram-retraction piston
record format message
restrictedsurplus
retro maneuver
scratchest
sequential decision
shotgun debugging
single-fraction
slice height
sodium photocell
sprocket hole
stack job processing
stand-by one
starting node
stranger plant
strict sense stationary process
Styracaceae
subcarrier separator
suitable for agricultural operations
technical marketing
tinning furnace
us-styles
velazquezs
voice actuated typewriter
waved aside
weighted random noise
xanthurenicase
yield one's breath
you make the bed you lie in