活泼氢原子

BY STEPHEN R .COVEEY The first habit is 1)proactivity. Be proactive. The word proactivity is fairly common in management literature, but you won't find it in the dictionary. It means more than merely

发表于:2018-11-28 / 阅读(368) / 评论(0) 分类 疯狂英语2001年

A Century of Memories (1940-1949) On the first Sunday in December 1941, Americans were doing what Americans did on any normal Sunday.

发表于:2018-11-28 / 阅读(297) / 评论(0) 分类 疯狂英语2003年

Broadcast: February 14, 2003 By George Grow This is the VOA Special English Environment Report. President Bush has offered a plan to speed development of technology that uses hydrogen as fuel. His goa

发表于:2018-12-07 / 阅读(251) / 评论(0) 分类 VOA2003(上)-科技导航

雅思听力场景词汇:化学词汇 在雅思听力考试场景中,化学相关的场景的词汇较为生涩,平时生活中可能也运用得比较少,以下的词汇供大家参考喔。 molecule 分子 particle 粒子 ion 离子 particle

发表于:2018-12-19 / 阅读(253) / 评论(0) 分类 雅思英语

Hyaluronic acid - the largest glycosaminoglycan known, it plays an important role of restricting the flow of water in tissues, particularly in synovial fluid where it acts as a lubricant.. Hydrogen bo

发表于:2019-01-03 / 阅读(183) / 评论(0) 分类 医务英语

Ecological balance - astable balance in the numbers of each species in an ecosystem. In the ecosystem of the mouth this balance is brought about by competition and cooperation between the different or

发表于:2019-01-03 / 阅读(244) / 评论(0) 分类 医务英语

Covalent bond - a strong bond between atoms formed by sharing outer electrons. When an atom has 8 outer electrons it is stable. Those which naturally have 8, like neon and argon gasses are quite unrea

发表于:2019-01-03 / 阅读(260) / 评论(0) 分类 医务英语

This is Scientific American's 60-second Science, I'm Steve Mirsky. Got a minute? Back on January 15th, US Airways Flight 1549 made that amazing water landing in the Hudson after both engines were taken out by Canada geese, which can weigh eight pound

发表于:2019-01-08 / 阅读(258) / 评论(0) 分类 Scientific American(六)月

This is Scientific American -60 seconds science. Im Cynthia Graber. This will just take a minute. A coal mine can degrade its local environment. But fungus may inadvertently help clean up the mine with its own waste products. Researchers worked with

发表于:2019-01-08 / 阅读(270) / 评论(0) 分类 Scientific American(七)月

This is scientific Americans 60 second science,I'm Cynthia Graber.This will just take a minute.A coal mine can decrease the local environment but a Fungi may indivertantly help cleanup the mine with its own waste products. Researchers worked with the

发表于:2019-01-08 / 阅读(265) / 评论(0) 分类 Scientific American(七)月

We have multiplied our possessions, but reduced our values. We talk too much, love too little and lie too often. We've learned how to make a living, but not a life; we've added years to life, not life to years. We have taller buildings, but shorter t

发表于:2019-01-11 / 阅读(204) / 评论(0) 分类 阅读空间

HEALTH REPORT – December 4, 2002: Test Warns of Heart Attack Risk By Jerilyn Watson This is the VOA Special English Health Report. Since the nineteen-fifties, American doctors have tested their pati

发表于:2019-01-11 / 阅读(246) / 评论(0) 分类 健康与环境

英语中表示倍数减少的表达方法(一)a is n times as small (light,slow,)as b. a is n times smaller (lighter, slower,) than b. 以上两句均应译为:a的大小(重量,速度,)是b的1/n[或a比b小(轻,慢,)(n-1)/n]. e.g

发表于:2019-01-17 / 阅读(220) / 评论(0) 分类 英语口译

英语美文-主动与被动语言的重要性 语言是表达自我,交流十分重要的途径。一个人的语言能传达很多信息,包括一个人的性格,思维,态度,生活环境,经历,职业等等。很多时候,我们作为

发表于:2019-01-17 / 阅读(204) / 评论(0) 分类 卡卡课堂早餐英语

The structure of atoms and the significance of protons will come in a following chapter, so for the moment all that is necessary is to appreciate the organizing principle: hydrogen has just one proton, and so it has an atomic number of one and comes

发表于:2019-01-29 / 阅读(221) / 评论(0) 分类 万物简史

Back on January 15th, US Airways Flight 1549 made that amazing water landing in the Hudson after both engines were taken out by Canada geese, which can weigh eight pounds each. Now scientists have used forensic techniques to clear local geesethe per

发表于:2019-01-30 / 阅读(220) / 评论(0) 分类 60秒科学

HEALTH REPORT-Heart Disease and C-Reactive Protein By Cynthia Kirk Broadcast: Wednesday, January 19, 2005 I'm Gwen Outen with the VOA Special English Health Report. American researchers have found evi

发表于:2019-01-30 / 阅读(279) / 评论(0) 分类 健康与经济

C-reactive protein is an indication of inflammation in the body, and, at high levels, is considered an early sign of future heart disease. It's a risk factor in a similar way that elevated cholesterol is a risk factor for heart disease, says Asheley

发表于:2019-01-31 / 阅读(226) / 评论(0) 分类 VOA标准英语2010年(三月)

俗话说:一母生九子,九子各不同。这句话在我邻居家孩子的身上体现得淋漓尽致。大女儿心灵手巧,做什么像什么;而二女儿却刚好相反,总是笨手笨脚。All thumbs就用来形容她这种笨手笨脚

发表于:2019-02-06 / 阅读(176) / 评论(0) 分类 实用英语

1.心事重重 some thing weighs heavily on ones mind The boss is quite down these days. He seems to have something weighing heavily on his mind. 老板这几天沉默寡言,看起来好像是心事重重的 2.苦苦哀求 press ones suit She press

发表于:2019-02-19 / 阅读(209) / 评论(0) 分类 英语口语
学英语单词
aluminum-alloy construction
archeabacterium
area of specialization
art direction
asahikawas
band selection circuit
baselice
bilge piece
Boultouma
cable separator
carvership
cash in ... chips
central-perspective correlation
cession
charge discriminator unit
common glow-worm
contusion collar
cosmozoic theory
courtrais
crystal texture
Cunha
DCIT
deflectron
disembarkee
distributive law
double-plus ungood
Douris
dubitatively
dunceish
encoded domain
Endothyridae
exploration and prospecting geology
flumping
free ship
funk-rock
Garmouth
genus Conilurus
get the go-by
graphic mapping control point
hand-outs
hard-head
haulabout
head-to-head structure
hemochromometer
heptode-mixer tube
honest pride
hurryed
hwang
hypersilyl
hystricine
index tool
interferometric barometer
K capture
karlotoxins
keeper voltage
labyrinth gland casing
leveltrol
maritime distress channel
medium indented cut plating
metizoline
Metropolis sampling technique
micromicrogram(picogram)
movable sign
mulliner book
n-dimensional column vector
nailing machine
network of communication
nonrouted
NSDC
nuclei originis salivatorius pontis
pessimistic performance time
plasmacule
Pleioblastus
policy option
Populus amurensis
prepubic tendon
Pull yourself up by your bootstraps
querulant
rabat
reflecting telescopes
satellite multilateration
Saundby's test
save state
section width
selenium cystine
shunt phaseadvancer
singularity theorems
slip permeability
spacerarm
standard facility
stel-
Taehan Min'guk
taken under her wing
Tecamachalco
time under voltage protection
uncompensated alkalosis
under
universal joint spider
untightened
uranous sulfide
walk before one can run
won over