氢离子跨膜梯度

interpret escort fill magician magistrate magnet levy retirement proximity maid reconciliation guitar perfume migrant gradient storage malice mammal maneuver manifest deafen foreign abstract maple

发表于:2018-12-01 / 阅读(198) / 评论(0) 分类 用Mp3背六级单词

Rachel Lee: The housing market keeps losing steam. Sales of previously owned homes fell 5. 7% last month according to the National Association of Realtors. If you're looking for a house , the group's

发表于:2018-12-05 / 阅读(137) / 评论(0) 分类 商业报道2006年

The composition of the sun lies in this bar code. 这个条码说明了太阳的组成 All the thin lines are caused by tiny amounts of complex elements 这些细细的线条,都是微量复杂元素造成的 metals like iron and magnesium. 好比说

发表于:2018-12-07 / 阅读(175) / 评论(0) 分类 太阳科普

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(171) / 评论(0) 分类 VOA2003(上)-科技导航

I am speaking not as a Briton, not as a European, not as a member of a western democracy, but as a human being, a member of the species Man, whose continued existence is in doubt. The world is full of conflicts: Jews and Arabs; Indians and Pakistanis

发表于:2018-12-12 / 阅读(136) / 评论(0) 分类 英语演讲

For something that could revolutionize the world, its come along very slowly. The fuel cell was invented in 1839, but there was little development until the 1950s when NASA started to use them in space where they are still used today. Now, after yea

发表于:2018-12-30 / 阅读(176) / 评论(0) 分类 国家地理2008年

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(156) / 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(158) / 评论(0) 分类 医务英语

VOICE ONE: This is SCIENCE IN THE NEWS in VOA Special English. I'm Barbara Klein. VOICE TWO: And I'm Steve Ember. This week, we will tell about an American study of the brain disorder schizophrenia. We tell about cars that use hydrogen as fuel. And,

发表于:2019-01-11 / 阅读(189) / 评论(0) 分类 VOA慢速英语2008(十)月

Obama Tells Syria's Assad to Lead Transition or Leave In his Middle East policy speech, President Barack Obama said Syrian President Bashar al-Assad faces the choice of either leading a democratic transition in his country or getting out of the way.

发表于:2019-01-14 / 阅读(93) / 评论(0) 分类 VOA标准英语2011年(五月)

For something that could revolutionize the world, its come along very slowly. The fuel cell was invented in 1839, but there was little development until the 1950s when NASA started to use them in space where they are still used today. Now, after year

发表于:2019-01-22 / 阅读(132) / 评论(0) 分类 自然百科2008年

When you think you've seen everything that could possibly be done with nail art, manicure devotees prove you wrong. Step forward the new trend blowing up on Instagram for 'bubble' nails, where acrylic is piled up on top of the nail and thinned out to

发表于:2019-01-28 / 阅读(126) / 评论(0) 分类 阅读空间

NEW YORK Plug in your car, then unplug, and drive away. More and more consumers are doing just that. At the 2014 New York Auto Show many automakers unveiled electric or hybrid vehicle to address the growing global appetite for environment-friendly ca

发表于:2019-01-30 / 阅读(143) / 评论(0) 分类 英语新闻

Part 2. Green Transporation Festival. Keywords. Green Transporation Festival, oil, environment, reduce, other kinds of fuels. Vocabulary. hydrogen, propane, scooter, hybrid, ethanol. A. You are going to hear a report on green transporation festival.

发表于:2019-02-03 / 阅读(162) / 评论(0) 分类 step by step 3000 第一册

SEOUL/WASHINGTONThe U.N. Security Council said Wednesday that it was working to craft new sanctions against North Korea after its latest nuclear test, while the United States and other world powers voiced skepticism about Pyongyang's claim that the u

发表于:2019-02-04 / 阅读(96) / 评论(0) 分类 英语新闻

Questions 12-20 The elements other than hydrogen and helium exist In such small quantities that it is accurate to say that the universe somewhat more than 25 percent helium by weight and somewhat less than 25 percent hydrogen. Astronomers have measur

发表于:2019-02-05 / 阅读(173) / 评论(0) 分类 托福英语

PREFIX 1.a-:of;on;intensive;negative,not,without;ad-;ab-. 2.ab-:away from,off. 3. ad-:to;at;for. 4. aer(o)- :relating to air . 5.al-:all. 6.ambi-:on both sides,around. 7.amphi-:on both sides,around. 8.an-:negative,not,without. 9.ana-:upon,up,on. 10.a

发表于:2019-02-06 / 阅读(180) / 评论(0) 分类 雅思英语

December 30, 1954 I am speaking not as a Briton, not as a European, not as a member of a western democracy, but as a human being, a member of the species Man, whose continued existence is in doubt. The world is full of conflicts: Jews and Arabs; Indi

发表于:2019-02-09 / 阅读(182) / 评论(0) 分类 英语美文

9月16日是墨西哥馆日,墨西哥馆五颜六色的风筝森林吸引了不少人的眼球,你知道小小的风筝里有什么大学问吗?其实风筝也有很多种分类哦,一起来看看吧。 说到kite这个单词,这也许是我们

发表于:2019-02-18 / 阅读(197) / 评论(0) 分类 英语口语

North Korea conducted a 'successful' hydrogen bomb test, Pyongyang has confirmed. The thermonuclear weapon triggered a massive 5.1 magnitude earthquake when it exploded at 10am local time on Wednesday. 平壤方面已经证实,朝鲜成功的进行了

发表于:2019-02-18 / 阅读(115) / 评论(0) 分类 英语新闻
学英语单词
accounting manager
allocation method
alpha-ray scattering
Andira inermis
antiemetic drug
Antimoniosis
asterix
atheistically
Avocats
back-biased barrier
backyards
baronetess
blank end
bramlin
C-Quens
castrated
chevauchees
chlorovinyl ketone
column dissolver
conventional arms trade
corley
corrugated roof steel
cross-agency
dark ground illumination
derived equation
dog's head
Dubyaea panduriformis
dummy coil
electron spin resonance signal
emolliates
eupharbol
exponential population
family Osmeridae
fertilzer apparatus placement
folding wheel chair
front water space
gesticulate
glauber scattering
glucofuranoside
GPEG
grain harvesting machine
hexhead
high focal plane buoy
Hilwan
horaga onyx moltrechti
horse sickness
in the Sunset
indicator error
intra-striate
IP (identification point)
jus representationis
Karapuz
land waters
lavatory waste pipe
lea formula
Ligustrum lucidum
lodos
M-N
magecolle
Mankato
maze decision stack
mechanical spring and flyweight governor
mellish
melodinus fusiformis champ.
metallic resinate
micrometer electrode
microsurge
Moghrabbin
mousemats
Norwayan
optable
Ore City
phase measuring apparatus
phylum ctenophoras
propogate
protoanthropic man
punye
reinforcement(operation)
Reinhardtius matsuurae
relief troops
roofman
schismatics
self-righting principle
severe environment
short time loan
smo(u)lder
solo blasts
stagonospora sacchari
stir fried
surface conductivity
tidal lamination
total-cost
tree stage
triple precision
u.n. system of national accounts
Urubaxi, R.
us cup
vacustat
Vieussens's ganglion
whemmle
wireless IP
zero speed