2-氨基-4-甲基吡啶

A: What does it cost to ride this bus? B: The fare is $1.25. A: Have you been driving buses a long time? B: I haven't been driving for longonly for a few months. A: Do you like to drive the bus? B: Not in the least bit. A: I would have never dreamed

发表于:2018-11-30 / 阅读(161) / 评论(0) 分类 英语情景对话-日常生活

AS IT IS 2016-10-01 Report: Smoking May Permanently Damage Genetic Material 报告称吸烟或永久性损伤你的遗传物质 Here is another reason to not light up a cigarette. Smoking can permanently damage your genetic material, according to a n

发表于:2018-12-16 / 阅读(59) / 评论(0) 分类 2016年VOA慢速英语(十)月

This is Scientific Americans 60-Second Science. Im Cynthia Graber. This will just take a minute. Saliva contains many useful components: lubricants, enzymes for breaking down food and now compounds that can reveal a persons age. Thats according to a

发表于:2018-12-24 / 阅读(106) / 评论(0) 分类 Scientific American(六)月

Ever get a sour stomach after your morning coffee? Well, you might end up switching to a dark roastbecause that coffee concoction may leave you with a happier tummy. That's according to the research presented at the American Chemical Society meeting

发表于:2018-12-24 / 阅读(104) / 评论(0) 分类 Scientific American(三)月

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. As Valentines day approaches, remember, its the thought that counts. Just ask a decorated cricket. Because according to a study published in the January

发表于:2018-12-24 / 阅读(94) / 评论(0) 分类 Scientific American(一)月

You may have heard that humans and chimpanzees have something like 96 percent of our DNA in common. So why, then, are diseases like cancer so common in humans but so rare in chimps? If our DNA is nearly identical, shouldnt we be at risk for many of t

发表于:2018-12-28 / 阅读(60) / 评论(0) 分类 初学者听力文摘精选

Egyptian archaeologists have discovered the bottom part of an unknown pyramid in the Sakkara area about 18 miles south of Cairo. NationalGeographic explorer-in-residence Dr. Zahi Hawass, the Secretary General of the Egyptian Supreme Council for Anti

发表于:2018-12-30 / 阅读(118) / 评论(0) 分类 国家地理2008年

Stomach Cells Happier with Dark Roast Coffee Ever get a sour stomach after your morning coffee? Well, you might end up switching to a dark roastbecause that coffee concoction may leave you with a happier tummy. That's according to research presented

发表于:2019-01-02 / 阅读(135) / 评论(0) 分类 60秒科学

85 新功效的抗生素在加州诞生 DATE=8-15-01 TITLE=SCIENCE REPORT - Designer Antibiotics BYLINE=Jerilyn Watson (Start at 1'04

发表于:2019-01-02 / 阅读(157) / 评论(0) 分类 科技之光

发表于:2019-01-03 / 阅读(75) / 评论(0) 分类 医务英语

M Madasiatic acid 崩大碗酸 Magnoflorine 木兰花碱 Magnolia cortex P.E 厚朴提取物 Magnolol 厚朴酚 Maitake mushroom P.E 灰树花提取物(舞茸提取物) Malonyl Oleanolic acid Hemi

发表于:2019-01-03 / 阅读(103) / 评论(0) 分类 医务英语

AGRICULTURE REPORT - Restrictions on Methyl Bromide By Mario Ritter Broadcast: Tuesday, March 16, 2004 This is Steve Ember with the VOA Special English Agriculture Report. Graphic Image Some chemicals

发表于:2019-01-06 / 阅读(139) / 评论(0) 分类 农业与发展

By Caty Weaver Broadcast: September 12, 2003 This is Bob Doughty with the VOA Special English Environment Report. Scientists in the United States have reported some good news about the 1)ozone in the

发表于:2019-01-11 / 阅读(111) / 评论(0) 分类 VOA2003(下)-环境与健康

Egyptian archaeologists have discovered the bottom part of an unknown pyramid in the Sakkara area about 18 miles south of Cairo. National Geographic explorer-in-residence Dr. Zahi Hawass, the Secretary General of the Egyptian Supreme Council for Anti

发表于:2019-01-22 / 阅读(129) / 评论(0) 分类 自然百科2008年

Science and technology 科学技术 Creutzfeldt-Jakob disease 克雅氏病 Breaking down the barrier 攻破屏障 A glimmer of hope for a drug that treats disease caused by prions 药物治疗朊病毒感染疾病的一线希望 THE epidemic of mad-c

发表于:2019-01-26 / 阅读(140) / 评论(0) 分类 经济学人科技系列

Science and Technology Creutzfeldt-Jakob disease Breaking down the barrier 科技 克雅氏病 攻破屏障 A glimmer of hope for a drug that treats disease caused by prions 药物治疗朊病毒感染疾病的一线希望 THE epidemic of mad-cow dis

发表于:2019-01-26 / 阅读(121) / 评论(0) 分类 经济学人科技系列

Science and Technology Epigenetics and stress Baby blues 科技 外因遗传与压力 新生儿蓝调曲 A mother's stress while she is pregnant can have a long-lasting effect on her children's genes 母亲孕期压力过大会对孩子的基因造成长

发表于:2019-01-26 / 阅读(137) / 评论(0) 分类 经济学人科技系列

Body Clock Provides Clues to Aging 生物钟提供衰老的线索 If youre searching for the fountain of youth, you might find it in your DNA. Thats according to a new study that sheds light on the biological clock ticking in our genomes, why our bod

发表于:2019-01-31 / 阅读(90) / 评论(0) 分类 VOA常速英语2013年(十月)

By Brian Padden Irbil, Iraq 17 August 2007 The death toll from a series of suicide attacks on Iraq's Yazidi sect on Tuesday continues to rise. Officials now estimate at least 400 people were killed and hundreds more wounded when four truck bombs expl

发表于:2019-02-03 / 阅读(142) / 评论(0) 分类 2007年VOA标准英语(八月)

Eating a small steak every day could be as good for you as stopping smoking, scientists say. 科学家说,每天吃一小块牛排可以像戒烟一样对你有好处。 People who eat lots of protein-rich food were found to have lower blood pressu

发表于:2019-02-18 / 阅读(334) / 评论(0) 分类 阅读空间
学英语单词
acid trap
ain oulmene ( colbert)
air swallowing
anti-interferon
appreciate against other currencies
automobile horn
automobile service equipment
aztlan
balano-
beacon radar
bedlams
biological process
bisbeeite
bolosaurid
bracker suspension
casts on
control unit description
creeper tractor
cultural heritage
Córdoba, Sa.de
density of energy state
dialeuropora murrayae
DMH
dolphin of the mast
drastic purgatives
drops back
envelope surface
genus daubentonias
george b. (saint georges b. )
Gregory of Nazianzus
gym class
hammer-blows
hyperflexible
Irrawaddy
kardexes
Kell-positive
lecture-style
light fiber communication
linear stochastic hypothesis
matin sleep
Maxwell distribution
miah
micro refraction spread
military salvage
molecular statement
monojets
multiplicative breakdown
multithemed
non marketable
non-linear conductance
nonelectrified section
o-chlorophenetole
Opalon
optical disc tower
oxacalcite (whewellite)
parietes
peat fibre
phlebitides
pipe-head
pope-john-paul-ii
prince philips
probationers
process development pile
Purongo
quarterly cumulative index
Queen of the South
quisqualis
racemous cysticercosis
recureful
revitalized
risk-sharing
Russell.
scrid
search problem in the presence of false target
series lockout contactor
severe illness
short chain line
sigfried lied (faroe)
small frequencies
special logging panel
speed-reliability tradeoff
spermiogram
spirit colors
stimulated luminescence
Stymphalus
subitizable
sulfenylium
summing circuit
tak
taxonomy production system
TCSL
the machine of government
torch corona
trade acceptance bill
tricolumnar
trimark
trusses
tuberculum articulare
typeless language
usable minimum immersion depth
warm-temperate rain forest
zero-grade