根瘤菌竞争品系

Mrs. Lee: Is this your dog? Tony : Yes, it is. Why? Mrs. Lee: Well, your dog chases my cat. Tony : Oh, I'm sorry. Mrs. Lee: Please keep your dog on a leash. Tony : Yes, ma'am. 这是你的狗吗? 李太太:这是你的狗吗? 托 尼:是的。怎么

发表于:2018-11-27 / 阅读(1029) / 评论(0) 分类 赖世雄初级美国英语

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(241) / 评论(0) 分类 新东方背诵文选

Everyfall, you need a new flu shot. Let's consider these vaccines training ourimmune system, the recognize specific strains of flu. Identifying by two protein on the virus coat, hem agglutinin(血细胞凝集素) and neuraminidases(神经氨酸酶).

发表于:2018-12-02 / 阅读(145) / 评论(0) 分类 Scientific American(十二)月

Every fall, you need a new flu shot. Thats because todays vaccines train your immune system to recognize specific strains of flu, indentified by two proteins on the viruss coat, / and /. Thats where the H and N come from in H1N1. Problem is those pro

发表于:2018-12-02 / 阅读(201) / 评论(0) 分类 Scientific American(十二)月

Success Is Counted Sweetest 成功的含义 Success is counted sweetest 从未成功的人们 By those who ne'er succeed. 最懂得成功的甜美. To comprehend a nectar 惟有极度的渴求 Requires sorest need. 方能体会甘露的滋味. Not on

发表于:2018-12-07 / 阅读(125) / 评论(0) 分类 感悟人生

What are the most difficult and useful things people have to learn in their 20s? 二十几岁的人最该学也最难学的是什么? 获得10.1k好评的回答@Brandon Chu These are the most difficult things I've learnt/am still learning. 这些是

发表于:2018-12-12 / 阅读(154) / 评论(0) 分类 阅读空间

The World Health Organization says about 500,000 people die every year from seasonal flu. To combat that, doctors recommend getting a flu vaccine at the beginning of each flu season and researchers are now working on a universal vaccine that could pr

发表于:2018-12-16 / 阅读(135) / 评论(0) 分类 VOA标准英语2010年(十二)月

Chinese veterinary experts say the outbreak of the H7N9 bird flu virus has not triggered an epidemic among poultry. The virus has been detected in chickens, pigeons and environmental samples in poultry markets in Shanghai. Researchers have yet to mak

发表于:2018-12-19 / 阅读(159) / 评论(0) 分类 英闻天下

JUDY WOODRUFF: Next, a long looked-for breakthrough in the battle against the deadly Ebola virus. One experimental vaccine has been shown to be 100 percent effective on humans. Hari Sreenivasan has the story. HARI SREENIVASAN: The results of a two-ye

发表于:2018-12-31 / 阅读(119) / 评论(0) 分类 PBS访谈健康系列

We all have Escherichia coli bacteria in our intestines. These are the good strains of the bacteria. They help us digest our food. There are billions of these bacteria in our intestines and in our feces. Of the hundreds of strains of good E. coli, th

发表于:2018-12-31 / 阅读(136) / 评论(0) 分类 365个英语简短小故事

英文歌曲:lullabyeTynisha Keli This is your Lul-Lul-Lul-Lul-Lul-Lul-Lul-Lulla-bye You're my baby And I sing this just to show your mine I'm a hold you til you Sleepin in the middle of the night This is your Lul-Lul-Lul-Lul-Lul-Lul-Lul-la-bye Clo

发表于:2019-01-10 / 阅读(183) / 评论(0) 分类 E乐吧

Tuberculosis Found in 18th Century Bodies 结核病发现于18世纪的尸体 Researchers have found tuberculosis bacteria in 200-year-old human remains. The researchers say the discovery is surprising. The remains came from a Hungarian church where

发表于:2019-01-12 / 阅读(156) / 评论(0) 分类 2015年VOA慢速英语(四)月

Hungrier Planet Strains Water Supply Thirsty food Water. As the population grows, there are more and more people at the tap every day. But when it comes to the worlds demand for water, drinking it is just the beginning Food - and agriculture in parti

发表于:2019-01-13 / 阅读(135) / 评论(0) 分类 VOA标准英语2012年(三月)

Tumultuous Year Strains US Pakistani Relations Pakistan and the United States have maintained a critical strategic partnership for the past 10 years despite tense relations over the war in Afghanistan and U.S. suspicions that Islamabad maintains ties

发表于:2019-01-13 / 阅读(118) / 评论(0) 分类 VOA标准英语2011年(十二月)

胡须上的细菌帮助发现新抗生素 Widespread use of antibiotics for conditions that don't require them has spurred mutations in bacteria strains, turning them into so-called superbugs. 抗生素的滥用引发细菌产生变异,成为所谓的

发表于:2019-01-14 / 阅读(113) / 评论(0) 分类 VOA标准英语2016年(二月)

Bacteria Might Share the Blame for Eczema 皮肤湿疹可能是细菌惹的祸 Your skinlike many other parts of your bodyis crawling with microscopic critters. It's a microbial zoo in a sense. Heidi Kong, a dermatology researcher at the National Ins

发表于:2019-01-20 / 阅读(152) / 评论(0) 分类 2017年科学美国人(七)月

英语作文-中考 Directions: For this part you are allowed thirty minutes to write a composition on the topic Is Stress a Bad Thing? You should write no less than 150 words and base your composition on the outline (given in Chinese) below: 1.有的

发表于:2019-02-01 / 阅读(135) / 评论(0) 分类 英语作文

By Phuong Tran Dakar 06 August 2007 In eastern Chad, violence along the Sudanese border has forced more than 100,000 Chadians into camps. Clinics run by international agencies try to contain and treat diseases that circulate in often waste-infested t

发表于:2019-02-03 / 阅读(174) / 评论(0) 分类 2007年VOA标准英语(八月)

UNITED NATIONS, April 15 (Xinhua) -- A new polio vaccine will be rolled out next week to replace the one which protects against all three strains of wild poliovirus. It marked the beginning of the largest and fastest globally coordinated rollout of a

发表于:2019-02-05 / 阅读(129) / 评论(0) 分类 英语新闻

An analysis by the Associated Press has indicated an Amtrak train in Philadephia was traveling about 107 miles per hour as it approached the curve and crashed. The speed limit was 50 miles per hour. At least 7 people were killed, 2 hundred others wer

发表于:2019-02-11 / 阅读(192) / 评论(0) 分类 美联社新闻一分钟2015(五)月
学英语单词
a hoist
age-at-entry
alternative journalism
alveolar ridge
ambiguous nucleus
ambra flava
applicability of bankruptcy
as witness
asbolite
auri chloridum
basal branch of tentorium cerebelli
Berovo
bombarding voltage
bulk stress transducer
Butiro
call my name
cardionephric
caruncle
Chicala
chicken-fry
claye
cobblers' dance (russia)
colpocysto-ureterocystotomy
complex ion formation analysis
converies
cooperative factories
counting measure
cross front
curis ossa
declination variometer
dehydrated window
dexterous in
dig sb in the ribs
discharge impulse oscillator
divergent jet guiding
drunk as a fiddler
dysprosium phosphate
equitable rate basis
Ericipites
evaporation ion pump
excision of turbinates
Ferula conocaula
final safety trip
flipism
fraternal birth order effect
general purpose manipulator
glutaramide
ideal time domain filter
intor
inventory import cycle
jajce
kiddy brother
leared
Lowsville
mac mahon fort
masto-occipital
melting conditions
misdetermine
mistree
Natacyn
negative-resistance oscillator
Nieuw-Loosdrecht
non-trivial valuation
normal compact operator
oil-producer
Oraquick
outside venture capital
packing spring
paired samples
parathyroidoma
pentadecenoyl
physics student
piperoxan
preliminary cleaning sieve
preparation-injection
protected motor
pseudo-trapped region
rating power consumption
recalking
reserve supply
rovalising
salt-water well
self-priming effect
Silesian lawn
simulation knowledge base
Sinian system
spongily
spot dog
steel rustless
stiffening-ring
subhuman
tab sheet
theory of power dependency
thermomechanical method
total cell count
tremlett
tropical pitcher plant
trust indentures act
two-value capacitor motor
uxo
Voltage Sag
wallbanger