传染唾沫

Robotics, 3-D Printing, Drones Lead 2015 Tech Innovations The waning years advances in computer hardware and software, mechanical devices, sensors and artificial intelligence brought the world another step closer to the robotic future. Electric cars

发表于:2018-11-29 / 阅读(157) / 评论(0) 分类 VOA标准英语2015年(十二月)

[00:00.00]Unit 25 [00:05.80]Reading and speaking [00:08.24]A changing city [00:10.53] For centuries,Beijing has been one of China's [00:13.47]most important cities. [00:15.69]Originally a place for emperors and officials, [00:18.14]today it is a weal

发表于:2018-12-13 / 阅读(193) / 评论(0) 分类 北师大版高中英语模块9(选修)

This is Scientific American's 60-Second Science. I'm Adam Hinterthuer. Got a minute? We all know to wash our hands after handling raw poultry. But next time youve just cruised down the interstate behind a truck full of chickens or Thanksgiving turkey

发表于:2018-12-24 / 阅读(89) / 评论(0) 分类 Scientific American(十一)月

Sneeze and cough particles form a cloud whose turbulence pulls in surrounding air, which allows the goop to maintain buoyancy and move farther than expected. Cynthia Graber reports. Gordon: When you have to sneeze or cough, do it into the bend of you

发表于:2019-01-02 / 阅读(122) / 评论(0) 分类 英伦广角

DEVELOPMENT REPORT -February 18, 2002: Infectious Diseases By Jill Moss This is the VOA Special English Development Report. The World Health Organization and several other United Nations agencies are

发表于:2019-01-07 / 阅读(86) / 评论(0) 分类 农业与发展

This is Scientific Americans' 60-Second Science. I'm Chelsea Wald. Got a minute? Vinaigrette dressing: when you shake it little vinegar droplets scatter through the oil, but when you put it down, the droplets merge and the dressing separates. That's

发表于:2019-01-08 / 阅读(98) / 评论(0) 分类 Scientific American(二)月

This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? A direct effect on human health related to climate change is the likely increase in infectious diseases transmitted by insects or through contaminated water. In the Marc

发表于:2019-01-08 / 阅读(104) / 评论(0) 分类 Scientific American(四)月

Cavers Explore Mysterious Hidden Wonders Caves have a subconscious hold on our imaginations - for our ancestors, they were not just shelter from the elements but also symbols of the womb, gateways to the underworld, places of wonder and mystery. Not

发表于:2019-01-09 / 阅读(99) / 评论(0) 分类 VOA标准英语2011年(八月)

This is the VOA Special English Health Report. Scientists continue to look for ways to deal with the deadly form of bird flu virus. Medical workers care for a bird flu patient in Medan, Indonesia, last year Researchers in Singapore, for example, hav

发表于:2019-01-11 / 阅读(95) / 评论(0) 分类 VOA慢速英语2007年(十)月

By Lisa Schlein Geneva 23 August 2007 The World Health Organization warns new and emerging infectious diseases are spreading rapidly around the world threatening the health, economies and security of all nations. This year's World Health Report says

发表于:2019-01-13 / 阅读(145) / 评论(0) 分类 2007年VOA标准英语(八月)

Dallas Attacks West Nile Virus by Land, Air The aerial and ground fumigation programs are blanketing around 1,400 square kilometers of the county, but don't target all mosquitoes. Laura McGowan, who works with Clarke, the company contracted to carry

发表于:2019-01-13 / 阅读(85) / 评论(0) 分类 VOA标准英语2012年(八月)

Ben Carter Powdered material called dry water, could provide a new way to store carbon dioxide in an effort to fight global warming. Dry water looks a lot like fine white sand, which isn't surprising since what makes it dry is that each tiny water dr

发表于:2019-01-14 / 阅读(119) / 评论(0) 分类 VOA标准英语2010年(九)月

Tools to Fight Infectious Diseases Rely on Public Health Programs A simple bite from a mosquito can end someone's life or change it forever. A sneeze, a handshake or even sharing of a desk can do the same thing. That's how H1N1 - or swine flu - sprea

发表于:2019-01-14 / 阅读(114) / 评论(0) 分类 VOA标准英语2012年(十二月)

Fact: liquid water is heavier than air. Fact: clouds, which consist of water droplets and ice crystals, seem to hover in the air. One final fact: the water droplets in a typical cloud together weigh many tons. Which raises a question: how do clouds s

发表于:2019-01-22 / 阅读(187) / 评论(0) 分类 英语时差8,16

BEIJING, Aug. 7 (Xinhua) -- Infectious diseases claimed 1,669 lives on the Chinese mainland in July, with AIDS contributing to 70 percent of the deaths, the Ministry of Health (MOH) said Tuesday. A total of 5,552 AIDS cases, which is categorized as a

发表于:2019-02-05 / 阅读(101) / 评论(0) 分类 英语新闻

A recent study found almost 60 percent of surgical residents admitted they had sustained needlestick injuries when they were medical students. Blunt tip needles, such as this one, are considered safer A recent study shows that medical students and ho

发表于:2019-02-05 / 阅读(110) / 评论(0) 分类 VOA标准英语2010年(二月)

一次咳嗽会产生2万个病毒 The next time you cough or sneeze, there is good reason to cover your mouth. As many as 20,000 viruses are expelled in an average cough, which may be sufficient to infect many people - particularly those who are not

发表于:2019-02-05 / 阅读(119) / 评论(0) 分类 实用英语

Metal, heal thyself 金属,自己愈合吧 Materials science: Researchers have devised an ingenious way for the damaged surfaces of metals to repair themselves when they come to harm 材料科学:研究人员构想出了一种新颖独特的方法,

发表于:2019-02-17 / 阅读(118) / 评论(0) 分类 经济学人综合

What's more, I've detected those falling and rising currents that make up the ocean's true breathing. 此外,我又注意过那些由上而下和由下而上的水流,形成真正的海洋呼吸作用。 I've seen a molecule of salt water heat up

发表于:2019-02-25 / 阅读(80) / 评论(0) 分类 《海底两万里》中英双语有声读物

They absorb the marine salts, they assimilate the solid elements in the water, 它们吸收了海中的盐,消化了水中的固体物质, and since they create coral and madrepores, they're the true builders of limestone continents! 它们是真正

发表于:2019-02-25 / 阅读(89) / 评论(0) 分类 《海底两万里》中英双语有声读物
学英语单词
alligatorfishes
angle pump
AOQ
aquascape
aubrieta,aubrietia
autoimmune antibody
auxiliary air chamber
auxiliary pumpdrive assembly
back measurement
bolbochromus ryukyuensis
brachysporium rytilicis
brain-tree
callays
Canoinhas
case involving the violation of regulations
changeabilities
circle of Willis'
compensation neutron logger
concentric candle
cross-country vehicle
daunosamine
destructionable
enforce the law strictly
engine front support bracket
Estrela d'Oeste
F-W migration
falling short of
feijoa bush
Foster Lakes
Furnivall, Frederick James
general long-term debt group of accounts
genus Cecropia
girth quotient
Goodyera matsumurana
grid-connected
halieutopsis simula
handiblow
Heavenly City
hydrograph of surface runoff
interior capacity
intermediate or interlobate moraine
interspirations
intrusion of tidal saltwater
lexicomorphological
ligameata pubocapsulare
light-water (nuclear) reactor
loreauville
lyponia palpalis
malea, cape
maximum demand watt-hour meter
metameric compound
middle bearing bracket
month counter
mother matrix
multiparticulate
navigation laws
non pensionable services
non-cultivable
non-sinusoidal wave
Obama, Barack
oblique cross-slider
opodymus
optionaire
orolingual paresthesia
plastic tubing particles
postassembly stage
power of retention
private plot
proprietary glass
pugmills
putrid stool
pyrophacus horologicum
radish ripper
rear leading mark
release valve rod
rheinhessens
riccardia latifrons
scrouged
semen amomi amari
senegaleses
short flame
special form brick
speed detecting unit
sphyraenoid
St-Agapit
St. Gregory of Nazianzen
steam-turbine oil
Taltal
tappet rod for valve
technological level
Thevenin theory
third-grader
thunderhumor
tower building
transaction testing
transfer cam
unbiassed confidence interval
vegetable lipase
vesicocolic fistula
vestopal
vitrified pipe
washcloths