四甲基吡啶

A: How much is the fare for this bus? B: It costs $1.25 to ride the bus. A: So, how long have you been driving buses? B: I've been driving this bus for only a few months. A: Do you enjoy being a bus driver? B: Not really. A: I would never dream of dr

发表于:2018-11-30 / 阅读(254) / 评论(0) 分类 英语情景对话-日常生活

A: How much is the fare for this bus? B: It costs $1.25 to ride the bus. A: So, how long have you been driving buses? B: I've been driving this bus for only a few months. A: Do you enjoy being a bus driver? B: Not really. A: I would never dream of dr

发表于:2018-11-30 / 阅读(200) / 评论(0) 分类 英语情景对话-日常生活

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(221) / 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(106) / 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(158) / 评论(0) 分类 Scientific American(六)月

This is Scientific American Sixty Seconds Science, I'm Sophie Bushwick, got a minute? When Mexican tetra fish moved into darker caves long ago, they evolved to deal with the dark by becoming albino and going blind. A new research shows that the chang

发表于:2018-12-24 / 阅读(173) / 评论(0) 分类 Scientific American(一)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(156) / 评论(0) 分类 Scientific American(三)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(123) / 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(170) / 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(178) / 评论(0) 分类 60秒科学

T Tanshinone IIA 丹参酮IIA Tanshinone I 丹参酮I Tanshinone IIB 丹参酮IIB Taraxasterol 蒲公英甾醇 Taraxerol 蒲公英赛醇 Tauro ursodesoxy cholic acid 牛磺熊去氧胆酸 Taxifolin 花旗

发表于:2019-01-03 / 阅读(153) / 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(159) / 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(193) / 评论(0) 分类 农业与发展

伊迪娜门泽尔( Idina Menzel), 1971年5月30日出生于美国纽约。伊迪娜门泽尔凭借百老汇经典舞台剧《女巫前传》中饰演阿尔法巴一角,获得托尼奖最佳女演员奖。1995年出演《吉屋出租》开始百

发表于:2019-01-10 / 阅读(154) / 评论(0) 分类 英乐时空

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(157) / 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(182) / 评论(0) 分类 自然百科2008年

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(183) / 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(171) / 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(192) / 评论(0) 分类 2007年VOA标准英语(八月)

10 Getting The Lead Out 第十章 把铅撵出去 In the late 1940s, a graduate student at the University of Chicago named Clair Patterson (who was, first name notwithstanding, an Iowa farm boy by origin) was using a new method of lead isotope measur

发表于:2019-02-17 / 阅读(183) / 评论(0) 分类 万物简史
学英语单词
abbreviatum
agriproducts
aliya(h)
alkylation acid
aphrophora nomurella
attritionary
azimuth correction
badge in
basilar process
bilge injection pipe
blunt point
bocanada
boundedsetof real numbers
callis
Capparis membranifolia
Cluny
codon-usage
comb thresher
contract payable
correlation tracking system
create about nothing
crenate
crystal control.
customizer
deal by/towards
deerfold
domestic signaling installation
e-nose
electro-luminescent panel
energy production capacity
examinationless
expediting
eye scleroid coat
fairisles
female-chauvinist
flex fatigue life
forsytes
forthnight
GGY
grace patricia kellies
hardpacked
heat(ing) calculation
higher-order goal
highest judicial organs
Hovd
hyperduly
identifiable language
inappreciable error
index of social purchasing power
inductor phase shifter
infoshops
integer programing
interference oxide thickness measurement
intrinsic scattering
Ives, Charles Edward
jachendars
junksts
liddel hart
lime watering treater
Lord Howe Seamount Chain
marker-pen
matched pair technique
max cap
MD (message data)
melilots
montecristi
moss classification
motor head
mountingly
multitester
negative signed rank
noise peak
nose prints
permanent-magnet instrument
phloridzin glycosuria
polygonum viscosum buch.-ham.
polyvinyl resins
pre-shared
precipitation physics
prickly-seeded spinaches
proportional-plus-integral-plus-derivative action
quiet title
replacement length
Rhus aromatica
ruffianish
savescums
scrapped parts
sewing machine table board
sideband voice
Siglunes
silk painting
slot exhaust on edges of tanks
smell of the shop
spoon spike
Swan of Avon
synallagmatically
telphering
the less said, the better
tin-lead plating
Toralactone
transfer, charge
undeuchaeta intermedia