组织培养生长物刺激作用

[00:00.00]UNIT14 [00:12.13]Future or Fantasy? [00:15.30]What will our world be like [00:18.80]in the future? Can we [00:20.45]look ahead twenty five years [00:22.30]and dream about the transformations [00:24.60]that will take place? [00:26.03]The sch

发表于:2018-11-30 / 阅读(195) / 评论(0) 分类 最新15篇文章贯通英语四级词汇

This is the VOA Special English Agriculture Report. Mulch is material spread over soil. It protects against wind and rain damage. It can also limit weed growth. Finding materials for organic mulch can be easy. Small pieces of tree bark or cut up lea

发表于:2018-12-07 / 阅读(95) / 评论(0) 分类 VOA慢速英语2009年(六)月

00:05.00]5 有用的东西 [00:10.00]A What things do Mary and Peter need to lay the tables? [00:16.78]Mary和Peter要摆什么在桌子上? [00:23.56]Mary needs some knives and forks. [00:27.83]Mary要摆一些刀子和叉子。 [00:32.10]She also needs some plates. [00:3

发表于:2018-12-13 / 阅读(196) / 评论(0) 分类 小学英语深圳双语版六年级

Mental Stimulation Might Cut Dementia Risk People who engage in mentally-stimulating activities over a lifetime have lower levels of a protein in the brain associated with Alzheimer's disease, a new study finds. That supports other research which sug

发表于:2018-12-16 / 阅读(131) / 评论(0) 分类 VOA标准英语2012年(二月)

When humans have a heart attack, heart muscles die after being cut off from their blood supply. But what if the heart could grow new muscle to replace the dead tissue? Some amphibians can regrow body parts, even entire limbs. But humans and other hig

发表于:2018-12-16 / 阅读(521) / 评论(0) 分类 VOA标准英语2011年(三月)

[00:05.75]Last month, scientists announced that they recorded the first detailed maps [00:13.06]of the development of a child's brain between the ages of three and fifteen. [00:19.98]Scientists at the University of California at Los Angeles School of

发表于:2018-12-26 / 阅读(136) / 评论(0) 分类 美国英语听力80篇

今天我们要学的词是 synchronize。 Synchronize的意思是同步,Trump administration proposes to shut down the government-funded telephone time-of-day service, which is also used to synchronize time-keeping devices, 特朗普政府提议关

发表于:2018-12-30 / 阅读(154) / 评论(0) 分类 英语单词荟萃

By Melinda Smith Washington 07 August 2007 Deep Brain Stimulation has been used successfully on patients in advanced stages of Parkinson's disease and other neurological movement disorders such as tremors. The remarkable success of this experimental

发表于:2019-01-07 / 阅读(186) / 评论(0) 分类 2007年VOA标准英语(八月)

Neil: Hello and welcome to 6 Minute English with me, Neil, and a very sad looking Finn. Finn: Hi Neil. Neil: Oh dear, whats wrong Finn? Finn: Its just this beautiful piece of classical music always makes me cry. Neil: Ah I see! Finn is a man who crie

发表于:2019-01-07 / 阅读(159) / 评论(0) 分类 六分钟英语

Little Johnny watched, fascinated, as his mother smoothedcold cream on her face. Why do you do that mommy? he asked. To make myself beautiful, said his mother, who then beganremoving the cream with a tissue. What's the matter? asked Little Johnny. Gi

发表于:2019-01-08 / 阅读(201) / 评论(0) 分类 趣味英语

New Report Finds Agriculture Promotes African Economic Growth A new report says African agriculture can contribute to sustained global economic growth. But it says there must first be greater investment in farming, markets and social development. The

发表于:2019-01-13 / 阅读(132) / 评论(0) 分类 VOA标准英语2012年(三月)

Researchers find no strong evidence that lifestyle changes - like diet, exercise and stimulating the brain - make a big difference in preventing cognitive decline in older people. A new study has failed to find any conclusive evidence that lifestyle

发表于:2019-01-13 / 阅读(138) / 评论(0) 分类 VOA标准英语2010年(六)月

Scientists Regrow Tissue Killed During Heart Attack U.S. scientists have done what was once considered science fiction - regrown heart muscle to replace tissue that was killed off in a heart attack. It's the latest advance in the field of regenerativ

发表于:2019-01-14 / 阅读(137) / 评论(0) 分类 VOA标准英语2012年(二月)

An estimated 20 percent of the population has trouble working with numbers. That's as many as one person in five with some sort of numerical disability. The British researchers are exploring ways to stimulate the brain to improve the ability to under

发表于:2019-01-14 / 阅读(163) / 评论(0) 分类 VOA标准英语2010年(十一)月

Researchers have identified a link between dementia and the brain damage that can occur in older people with high blood pressure and other forms of cardiovascular disease. High blood pressure, high cholesterol, and other conditions that affect blood

发表于:2019-01-14 / 阅读(213) / 评论(0) 分类 VOA标准英语2010年(十一)月

Study: Electric Brain Stimulation Alleviates Some Disorders HOUSTON Modern medicine relies mainly on drugs to cure or alleviate disorders, but for some conditions doctors apply electrical stimulation. The pacemaker, for example, helps weak hearts mai

发表于:2019-01-14 / 阅读(145) / 评论(0) 分类 VOA标准英语2014年(六月)

Beating Heart Tissue from Stem Cells In a study in the journal Science, researchers explain how they used mouse embryonic stem cells and microchip technology to create heart muscle tissue that actually beats. Cynthia Graber reports One of the goals o

发表于:2019-01-30 / 阅读(189) / 评论(0) 分类 60秒科学

AGRICULTURE Report – October 22, 2002: Aquaculture By Gary Garriott This is the VOA Special English Agriculture Report. Aquaculture is the production of food through the controlled growth and harves

发表于:2019-01-30 / 阅读(159) / 评论(0) 分类 农业与发展

By Alex Villarreal Washington, DC 01 February 2008 Medical researchers in Canada say a brain stimulation procedure used to treat people with Parkinson's and other diseases could help restore the memory of dementia patients. The researchers stumbled u

发表于:2019-02-04 / 阅读(172) / 评论(0) 分类 VOA常速英语2008年(二月)

Do do do do do Do do do do Do do do do do Do do do do do Do do do do Do do do do do Was I not enough stimulation Hit by a brake the other day Just when I thought that I'm okay You didn't like my conversation I can't come up with something new It does

发表于:2019-02-20 / 阅读(215) / 评论(0) 分类 英乐时空
学英语单词
accepted scale
advow
against all expectation
air lift tank
ammino
antimonial lead ore
apn(o)ea
automated fuzzy reasoning
bad condition of teeth
block brake
bratishing
bridge member
cancerous symptom
cascade image converter tube
caumesthesia
causal theory
character-spacing reference-line
Chesniella
clinestrol
Combustion Air Flow
communication research
competitive currency depreciation
comprehensive utilization
conditions of constant mass flow
consistest
continuation test
crombec
cromornas
customs administration
D-type boilerD
Davis submerged escape apparatus
decoction made from powder
deflector jet
dictionary flame
document based supply
draw plays
duall
duplex facsimile equipment
elope
federation of labour unions
feistily
general purpose computer
guaranteed annuity interest
Hemodal
heterostemony
Hicks neutral technical progress
hitch-hiked
hot air distributor
humification coefficient
in turn
Induan Stage
initial approach area
integrating counter circuit
job grade
joselita
kulis
leading truck box cellar lid pin
little-drop technique
market weight
metal implant into nasal septum
methyleneaminoacetonitrile
mine smalls
morrices
multiple address instruction
Nayāgaon
on-line transaction
one line ground
ostreoliths
overarmed
paraxial electron flow
photoscopy
phytochemically
pin-chopping machine
PMBI
pointing correction
pressure turbine
production record
prove be a match for someone
Pāndādā
quartel
rapidly decreasing function
ratko
restricted selection
Rusne
sea-water activated battery
sheaf theory
single-breasted
single-class
smelling cargo
soft-servest
software technician
standardized deviation
statically allocated buffer
sterlets
test-ban
thermoflex
track ga(u)ge
udn
unprofessionalisms
up-a-daisy
vanish into the blue
yaw calibrator