[航] 轨道动力学

Questions for NASA after Rocket Explosion 火箭爆炸后美国国家航空航天局面临的问题 Unmanned Antares rocket is seen exploding seconds after lift off from a commercial launch pad in this still image from NASA video at Wallops Island, V

发表于:2018-12-08 / 阅读(63) / 评论(0) 分类 2014年VOA慢速英语(十)月

Virgin Spaceship Crash Raises Questions 维珍宇宙飞船失事引发诸多问题 WASHINGTON Plans to fly tourists to the edge of space could be delayed after Friday's crash of Virgin Galactic's SpaceShipTwo during a manned test flight. It is the se

发表于:2018-12-16 / 阅读(43) / 评论(0) 分类 VOA标准英语2014年(十一月)

美国火箭爆炸,私营航天产业的挫折 Wednesday's successful launch of a Russian space vehicle taking supplies to the International Space Station was in sharp contrast to the explosion of a private U.S. cargo space craft shortly after it's

发表于:2018-12-19 / 阅读(62) / 评论(0) 分类 VOA双语新闻 2014年10月

[0-1:56.48]Oh. 哦 [00:00.96]You should have gone to China. 你们应该去中国 [00:02.84]You know, cause I hear they give away babies 我听说他们送孩子就像大赠送 [00:05.16]like free iPods. 知道吗 [00:06.44]they pretty much just put

发表于:2019-01-01 / 阅读(123) / 评论(0) 分类 听电影学英语-朱诺

Galactic Rotation 银河系自转 Astronomers calculate there is ten times more matter in our Milky Way galaxy than we can actually see. Discover how the orbital motions of stars in the galaxy reveal dark matter -- on today's Earth and Sky. JB: I'm Joel

发表于:2019-01-02 / 阅读(183) / 评论(0) 分类 (科普英语)Earth and Sky

This is Scientific American's 60-Second Science. I'm Christie Nicholson. This will just take a minute. So check this out: Hi my name is Adi Rajagopalan, I'm going on 18 in a few days, and my project was Modelling Synergistic Cellulolytic-Hemicellulol

发表于:2019-01-08 / 阅读(77) / 评论(0) 分类 Scientific American(三)月

美国私企飞船与空间站对接 WASHINGTON, Jan. 12 (Xinhua) -- A commercial spacecraft, operated by U.S. space company Orbital Sciences Corp., docked with the International Space Station (ISS) on Sunday morning on its first official cargo resup

发表于:2019-01-09 / 阅读(90) / 评论(0) 分类 英语新闻

SCIENCE IN THE NEWS - Space Junk Threatens Earths Orbital Environment JIM TEDDER: This is SCIENCE IN THE NEWS, in VOA Special English. Im Jim Tedder. KATHERINE COLE: And Im Katherine Cole. Today, we tell about an ever increasing number of objects in

发表于:2019-01-12 / 阅读(110) / 评论(0) 分类 2011年VOA慢速英语(九)月

Global Warming Could Delay Next Ice Age The next ice age could be delayed by tens of thousands of years due to excessive amounts of heat-trapping carbon dioxide in the atmosphere, which disrupts Earths natural cycle of warming and cooling, according

发表于:2019-01-13 / 阅读(83) / 评论(0) 分类 VOA标准英语2012年(一月)

With Failed Launch, US Private Space Industry Suffers Setback 火箭发射失败 美国私人航天受挫 Wednesday's successful launch of a Russian space vehicle taking supplies to the International Space Station was in sharp contrast to the explosi

发表于:2019-01-14 / 阅读(63) / 评论(0) 分类 VOA标准英语2014年(十月)

在新的一年里,人们总是会为自己定下目标,许下愿望,希望在一年里能够实现,你的愿望是什么呢?有决定做到吗? Jennifer: Hello and a very warm and friendly welcome to the first 6 Minute English of 2013. M

发表于:2019-01-23 / 阅读(164) / 评论(0) 分类 一起听英语

The amount of debris orbiting the Earth has reached a tipping point for collisions, which would in turn generate more of the debris that threatens astronauts and satellites, according to a US study released on Thursday。 NASA needs a new strategic p

发表于:2019-01-30 / 阅读(73) / 评论(0) 分类 实用英语

By David McAlary Washington 12 July 2006 Astronaut Mike Fossum (on arm)installs the International Space Station's railcar-like mobile transporter U.S. space shuttle astronauts are on their third spacewalk since Saturday, this time to practice method

发表于:2019-02-03 / 阅读(179) / 评论(0) 分类 2006年VOA标准英语(七月)

The Virtual College In the fall of 1994, I arrived at my freshman dorm in my old station wagon filled with new clothes, too many shoes, and my proudest possession: a computer the size of a small refrigerator. Fortunately, I only had to lug1 my 50-pou

发表于:2019-02-04 / 阅读(109) / 评论(0) 分类 实用英语

Many online social networking tools have fulfilled uses their creators had never dreamed of. Twitter started as a way to tell others what you were doing, and then surprisingly, turned into a tool to find gas during the Atlanta gas crunch last year. N

发表于:2019-02-05 / 阅读(61) / 评论(0) 分类 实用英语

The so-called one-child policy was brought into law in the late 1970's as a way to limit population growth, given that the economy at the time was just starting to open up to the outside world, and the domestic resources, particularly in urban areas,

发表于:2019-02-06 / 阅读(50) / 评论(0) 分类 英语新闻

You're standing face-to-face with a professional in your industry who can help you advance your career. This is your chance to wow this person with a strong handshake, bright smile and direct eye contact, followed by a witty comment that initiates a

发表于:2019-02-07 / 阅读(76) / 评论(0) 分类 英语口语

你知道丈夫的含义吗?丈夫、丈夫,一丈之内乃夫也!你知道英文husband是怎么来的吗?husband=house+band 房屋栓牢!(band的含义就是Something that constrains or binds morally or legally约束:在道义上或法律

发表于:2019-02-08 / 阅读(89) / 评论(0) 分类 实用英语

Science and technology 科学技术 Computer security 计算机安全 Blame game 推脱责任 How to mimic human laxness with computers 如何用计算机模拟人类错误 TO ERR is human, but to foul things up completely takes a computer, or so the

发表于:2019-02-16 / 阅读(71) / 评论(0) 分类 经济学人科技系列

MARIUPOL, UKRAINE Smoke billows from Azovstal steel works here, one of the many gargantuan industrial assets in this southeastern port city owned by Ukraines richest man, Rinat Akhmetov. Akhmetov employs more than 300,000 people across the region. Th

发表于:2019-02-18 / 阅读(77) / 评论(0) 分类 英语新闻
学英语单词
a-n signal a-n
Aboriginalisation
allybromide
annular counter
Arantangi
as fresh as a rose
authoritarians
basigenous
Bloody Sunday
bottle gourds
bromo-benzoyl chloride
cell spin
CFIDO
cladocerans
Clematis chiupehensis
clutch release finger
colored compound
complementary emitter follower
convergent iterative procedure
coordinate system paper
cutting-plane symbol
day-biters
demarcated
desquamates
direct electric process
disengage tracer
Doppler constant
Drag-lizard
durda
dysyng
effluent tax
emphasizers
enzyme digestion
epitonium melior
expiated
extinctors
Femara
file sending application
fishrib
frozen-core approximation
fungisterols
g-adaptation illusion
generalize for
Gregory of Nyssa, Saint
Gulf of California
have an interest in
high - pressure selling
high-rate cutting
hopologists
hydropexic
injection spray pipe
job's completion queue
levy war upon
LIMEDS
marking convention
merville
methylscopolamine
mimulus
minsh
multiple lamp holder
ocunterparty
omalo-
orlov
Palaeocene
Pedicularis dissectifolia
phthalophenone
phylloscopus inornatus
pliablest
pollen segregation
Pong Rok, Stung
pounces
refuge
rehanged
Retrop
reverse transmitter
salt-mud combination log
scoliopleura tumida
scuttle-butt
secreted
selenium(iv) oxyfluoride
self assertive behavior
semen cannabis
semi-polar liquid phase
siuslaw
Spiradiclis xizangensis
Stationary Office
stock minded
stoplog hoisting equipment
sweet cherry bark
tile roof
tongues wag
Trochus pyramis
turbulent atmosphere
unfearfully
United Nations Commission on the Status of Women
ventricular ectopy
vertical member
volume control block
Wallacia
welded seam can
wilch
zincoid