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Bacteria are extremely small living things. While we measure our own sizes in inches or centimeters, bacterial size is measured in microns. One micron is a thousandth of a millimeter: a pinhead is about a millimeter across. Rod-shaped bacteria are u

发表于:2018-11-28 / 阅读(464) / 评论(0) 分类 新概念优美背诵短文50篇

Bacteria are extremely small living things. While we measure our own sizes in inches or centimeters, bacterial size is measured in microns. One micron is a thousandth of a millimeter: a pinhead is abo

发表于:2018-12-01 / 阅读(175) / 评论(0) 分类 新东方背诵文选

Herman Koch Gets Meta In 'Dear Mr. M' play pause stop mute unmute max volume 00:0006:04repeat repeat off Update Required To play the media you will need to either update your browser to a recent version or update your Flash plugin. LINDA WERTHEIMER,

发表于:2018-12-02 / 阅读(113) / 评论(0) 分类 2016年NPR美国国家公共电台8月

A new study into the hygiene of supermarkets has found that shopping carts are dirtier than the stores bathrooms. Microbiologist Dr Charles Gerba of the University of Arizona conducted research on the handles of 85 carts in four American states. He r

发表于:2018-12-07 / 阅读(158) / 评论(0) 分类 创新英语

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Sometimes a bit of bacteria can be just what the doctor ordered. If you prize yogurt for its active cultures, you know what Im talking about. Now a new s

发表于:2018-12-24 / 阅读(103) / 评论(0) 分类 Scientific American(九)月

They say that who you hang out with says a lot about who you are. Well, the microbes that hang out on your fingers can point to exactly who you are. Because scientists at the University of Colorado in Boulder have been able to identify individuals ba

发表于:2018-12-24 / 阅读(86) / 评论(0) 分类 Scientific American(三)月

This is the VOA Special English Health Report. Tuberculosis killed one million three hundred thousand people around the world in two thousand seven. In addition, almost half a million people who were infected with tuberculosis and with H.I.V. also di

发表于:2019-01-02 / 阅读(69) / 评论(0) 分类 2010年慢速英语(三)月

头孢菌素类 第二代 头孢呋辛钠 Cefuroxime Sodium 头孢呋肟,赐福乐信,舒贝洛,西力欣,特力欣,明可欣,CXM,Zinacef,Monacef,Ketocef,Furex Kesiut,Supero 头孢

发表于:2019-01-03 / 阅读(107) / 评论(0) 分类 医务英语

By Ruth Reader Washington, DC 13 February 2008 There is growing concern around the world over illnesses caused by new antibiotic-resistant bacteria, or so-called superbugs, and the decreasing effectiveness of antibiotics to treat infections. Earlier

发表于:2019-01-07 / 阅读(106) / 评论(0) 分类 VOA常速英语2008年(二月)

HEALTH REPORT -August 7, 2002: Bacteria in Food This is the VOA Special English Health Report. An American food company recently recalled about eight-million kilograms of ground beef that is used to m

发表于:2019-01-07 / 阅读(87) / 评论(0) 分类 健康与环境

HealthReport-GutBacteria:WeAreWhatWeEat This is the VOA Special English Health Report. The human digestive system is full of bacteria -- mostly good bacteria. These organisms help break down food so the body can use the nutrients. Scientists are expl

发表于:2019-01-12 / 阅读(121) / 评论(0) 分类 2011年VOA慢速英语(九)月

Experts: Let Produce Dry Out to Avoid Bacteria American researchers say farmers should wait one day after a rain storm or watering their fields to harvest fresh fruits and vegetables. They say gathering the crops at least 24 hours after rainfall incr

发表于:2019-01-12 / 阅读(188) / 评论(0) 分类 2015年VOA慢速英语(七)月

E coli: Good Bacteria Gone Bad As a major outbreak of a highly toxic strain of E. coli bacteria continues to sicken residents of Europe, medical experts are racing to find the source. E. coli doesn't usually cause any trouble, says University of Minn

发表于:2019-01-14 / 阅读(122) / 评论(0) 分类 VOA标准英语2011年(六月)

The China Anti-Doping Agency said Sun Yang had tested positive for a banned stimulant trimetazidine, state news agency Xinhua reports. 中国新华社消息,中国反兴奋剂中心宣布孙杨因在兴奋剂三甲氧苄嗪检测中呈阳性被禁赛

发表于:2019-01-16 / 阅读(112) / 评论(0) 分类 英语新闻

MARY LOUISE KELLY, HOST: After a big fashion show, there's always the question, which trends will make the leap from the runway to real life? After Paris Men's Fashion Week, we ask, do shoes need their own pair of shoes? ARI SHAPIRO, HOST: The Chines

发表于:2019-01-16 / 阅读(109) / 评论(0) 分类 2018年NPR美国国家公共电台2月

My legs are hairy for a good reason, replied Charlotte. 我的腿毛茸茸是有道理的,夏洛回答说, Furthermore, each leg of mine has seven sections, the coxa, the trochanter, 而且我的每条腿有七个节,基节、转节、 the femu

发表于:2019-01-29 / 阅读(157) / 评论(0) 分类 夏洛的网

Cigarettes Are Bacteria Sticks, Too A study in the journal Environmental Health Perspectives finds that cigarettes harbor various species of bacteria, some of which cause disease. Karen Hopkin reports This January, the country Turkey will join a hand

发表于:2019-01-30 / 阅读(119) / 评论(0) 分类 60秒科学

European and World Health Organization scientists say a deadly outbreak of E. coli bacteria that has killed 18 people is a rare and virulent(致命的) strain of the bacteria. The latest victim died Wednesday night in Germany. The United Nations agen

发表于:2019-02-04 / 阅读(98) / 评论(0) 分类 英语新闻

BEIJING, May 24 (Xinhuanet) -- Scientists revealed for the first time the molecular structure of proteins, which enables bacteria to transfer electrical charges, according to a new study. The revelation was published in Proceedings of the National Ac

发表于:2019-02-07 / 阅读(74) / 评论(0) 分类 英语新闻

48 Bacteria Bacteria are extremely small living things. While we measure our own sizes in inches or centimeters, bacterial size is measured in microns. One micron is a thousandth of a millimeter: a pinhead is about a millimeter across. Rod-shaped bac

发表于:2019-02-17 / 阅读(83) / 评论(0) 分类 双语有声阅读
学英语单词
absorbing dust mass
aceria jasminoidis
all-stations address
angustassiminea kurodai
anode screen
atheroprogression
auto bias
bat-man
bed-wetters
bumboozer
cascade hydropower stations
cassie-
column headings
come the sth
come to sb.'s knowledge
concession roads
conformal wire grating
contract work system
cost,insurance and freight(cif)
cyclone family
delvy., dely.
diphenyl disulfoxide
direct pressure hot chamber machine
disprovers
Dodola
domestic driving permit
drift bottle
Dyas
dysimmunoglobulinemia
early mature valley
electrical drainage
elongation meter
evaluation model
exercise status
false rue anemones
fibre pull-out
field desorption spectroscopy
flint-glass prism
FROM . . . TO
gain-time
Golgi's method
gratefulnesses
heavy-key
hummie
hydrated mercurous nitrate
inclined disk butterfly valve
interim audit work of owners' equity
La Yeguada
lead(iv) chloride
leased material
lemuridous
Lepidothamnus
letter stock
local consumption
location between the exterior and interior
material study
maximizations
median bank
miniclimate
misregistration character
modal window
monogermane
multi-mediocrity
needle-shedding blight
Nitrite-N
optometrical
parasitic disturbance
peridiverticulitis
pneumoparotitis
polymer/inorganic layered oxide nanocomposite
postread
protection test equipment
quadricellular
Rausedyl
recarpeting
REPROM (reprogrammable read-only memory)
retrodiagnosing
river-made lake
roll in pairs
Rottna
skew nailing
slack path
slip line theory
smittia truncatocaudata
snow slip deflector
sphaeraster
stem sprout
strata corneum epidermidis
surface relaxation
Taoyuan County
tapered incrcaser
temporary filter
tenant pur autre vie
tled
topagnosis
transcendental irrational number
tuck-pointer trowel
unblocking field
unit interval at commutator
unmocked
variable air volume(VAV) air conditioning system
white clip circuit