厌氧菌 ; 厌气性菌

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(454) / 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(166) / 评论(0) 分类 新东方背诵文选

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(142) / 评论(0) 分类 创新英语

Common Infection Raises Female to Male HIV Risk A common bacterial infection among women in sub-Saharan Africa sharply increases the risk of HIV transmission to men. Researchers say current treatments provide only a short-term solution. Its long been

发表于:2018-12-08 / 阅读(74) / 评论(0) 分类 VOA标准英语2012年(六月)

AZUZ: According to the United Nations, food waste is defined as food that's initial safe for people to eat, but it doesn't get eaten because it's left to spoil or it's thrown out. The U.S. government estimates that food waste in America could be as h

发表于:2018-12-19 / 阅读(51) / 评论(0) 分类 CNN美国有线新闻2016年10月

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(90) / 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(74) / 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(59) / 评论(0) 分类 2010年慢速英语(三)月

Ameloblasts- cells which differentiate from ectoderm and secrete enamel during tooth development. Amino acids - building blocks of proteins containing a carboxyl group (COOH) and an amino group(NH2) b

发表于:2019-01-03 / 阅读(125) / 评论(0) 分类 医务英语

Abductors - muscle taking a limb or the jaw away from the body. Acetyl choline - Aneurotransmitter substance found at all cholinergic synapses including those of motoneurones at the neuromuscular junc

发表于:2019-01-03 / 阅读(58) / 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(96) / 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(74) / 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(105) / 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(177) / 评论(0) 分类 2015年VOA慢速英语(七)月

AS IT IS 2015-09-18 Palestinians Turn Organic Waste into Gas for Cooking 巴勒斯坦人将有机废物转化成天然气做饭 Rural communities in developing countries often have trouble securing dependable supplies ofenergy for cooking and lightin

发表于:2019-01-12 / 阅读(67) / 评论(0) 分类 2015年VOA慢速英语(九)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(107) / 评论(0) 分类 VOA标准英语2011年(六月)

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(109) / 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(84) / 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(69) / 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(71) / 评论(0) 分类 双语有声阅读
学英语单词
a stretch of high land from which water drains
adult physical fitness test
ampule
arabian stripe
asclepias speciosas
automatic closing appliance
basic characteristic curve of pump
coddy-moddy
connotes
crank mechanical extruder
dart thrower
descending vertical angle
dip(ping) process reclaim
dislikening
ELB (elbow)
embryonic complex
enteric intussusception
equivalence gate, equivalence element
event timing forecast
exocrines
fix one's face
four cycle
fuel handling machine base
gradient search method
guardian by nurture
hand scraping
haranguer
hymenoplasties
ice-breaking disconnector
igloolik
ingrown hairs
inter corporate stock investment
iodine number of fat
iron wire
ivory-bone
Kapalala
Karmathians
Kattegat
Keota
Lang's vesicle
Lasswade
lithoglyph
low-voltage terminal
made a noise in the world
magnolin
medical notes
methylcyclopentadiene
monkey pod
myomorpha
NAPLPS
Navas de Oro
non-reset timer
normal working
obsecratory
one-parametric loading
Oxetanone
pass the eye over
PCKD
penetrating fluid
penpoints
photofinisher
plant equipment characteristics
play ball with
preposterously
prosopon
psyc-
psychrosensitive
quasi-loans
quotient of ideals
received image
regular cut
rejuvenative
reshims
Riparia
rippling edit
robstown
scar-lett
schoolfriends
Sevana Lich
Shōdo-jima
soil pore space
specification api
state operated economy
staying with
still-existings
stratigraphic time marker
surplus from merged company
sweet peach
tape-delayed
TCVN
technoscience, techno-science
telegraph office
theonsky
to mark time
trachealstenosis
travel on one's face
vitrifacture
walkes
wave front aberration
witness to the accident
WKD