多冲式轨道转移

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(67) / 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(44) / 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

A: I need to get on another bus, but I have no more money. B: Where'd the rest of your money for the bus go? A: I spent it on a bag of chips. B: Well, that was an intelligent thing to do. A: You don't have any spare change? B: No, I don't. A: How am

发表于:2018-12-25 / 阅读(87) / 评论(0) 分类 实用乘车英语

A: I need to get on another bus, but I have no more money. B: Where'd the rest of your money for the bus go? A: I spent it on a bag of chips. B:Well, that was an intelligent thing to do. A: You don't have any spare change? B: No, I don't. A:How am I

发表于:2018-12-26 / 阅读(114) / 评论(0) 分类 乘公交-Taking the Bus

A: Is this where I go to register for classes? B:This is it. A: I need to add a few classes. B: What classes would you like to add? A: I need to take some classes that will help me transfer. B: Have you finished any classes so far? A: This is my firs

发表于:2018-12-26 / 阅读(91) / 评论(0) 分类 转学-Transferring to a Universit

A: What classes have you taken so far? B: I've been working on my GE classes. A: Is that all? B: That's it for right now. A: What about your other classes? B: I'm working towards transferring schools. A: Which classes have you finished already? B: I'

发表于:2018-12-26 / 阅读(125) / 评论(0) 分类 转学-Transferring to a Universit

A: Are you going to transfer? B: Yes, Im going to transfer. Are you? A: Yes. I want to transfer. B: What school do you want to transfer to? A: Either CSULA or UCLA. B: Either school would be a great choice. A: Where are you going to transfer to? B: I

发表于:2018-12-30 / 阅读(74) / 评论(0) 分类 大学英语对话

A: Do you plan on transferring schools? B: I want to. Do you? A: Im thinking about it. B: Where do you want to transfer to? A: I want to go to CSULA or UCLA. B: Those are pretty good schools. A: Where are you planning on transferring to? B: I havent

发表于:2018-12-30 / 阅读(88) / 评论(0) 分类 大学英语对话

A: What classes have you taken so far? B: Ive been working on my GE classes. A: Is that all? B: Thats it for right now. A: What about your other classes? B: Im working towards transferring schools. A: Which classes have you finished already? B: Ive f

发表于:2018-12-30 / 阅读(107) / 评论(0) 分类 大学英语对话

A: Which classes have you completed? B: I have been taking classes for my General Education. A: Those are the only classes? B: Thats all I need to take right now. A: Why dont you take any other classes? B: Im just working on transferring right now. A

发表于:2018-12-30 / 阅读(88) / 评论(0) 分类 大学英语对话

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(187) / 评论(0) 分类 (科普英语)Earth and Sky

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(94) / 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(113) / 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(86) / 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)

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(77) / 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(182) / 评论(0) 分类 2006年VOA标准英语(七月)

MILAN, Jan. 12 (Xinhua) -- Inter Milan midfielder Wesley Sneijder said on Saturday that he will make up his decision wheter or not accept Galatasaray's offer by Monday. I'm fine. It is a big decision I have to take, so I don't think it will be made b

发表于:2019-02-09 / 阅读(128) / 评论(0) 分类 英语新闻

RIO DE JANEIRO, Feb. 8 (Xinhua) -- Brazil's Gremio has confirmed its interest in signing Arsenal defender Andre Santos for the club's upcoming Copa Libertadores campaign. The club is in a race against time to secure the 29-year-old ahead of the Febru

发表于:2019-02-17 / 阅读(69) / 评论(0) 分类 英语新闻
学英语单词
99Tc-Succimer
A. S. L. O.
actual efficiency
agricultural history
Allan alloy
amind
antiboxing
aromatic alcohols
average line load
azimuth setting knob
beaten biscuit
bitriplets
BZOH
Camellia tachangensis
cavitation level
Chitignano
cognitive meaning
color pyrometer
compound link
computing language
coufin
Cover On A Bounce
curve of resistance
deastin
descriptor index
determination of buffer bicarbonate
doorchimes
dpph
Dunstable, John
dynamic photo-elasticity
eigendecompositions
electromagnetic calculation
employment service statistics
Eochiromys
ethify
fatigue limit state
finast
five-roller stretcher
float tanks
Flörsheim-Dalsheim
Forgiveness of sin
genoeser
has the advantage of
hepatonephritis serosa acuta
hologastrous
immunologically competent cell
indevotion
iridic platinum
ken-kind
koala bear
labilized gravity meter
linear parallax
mansouri
metallish
multi-purpose trademark machine
multiprocessor scheduling
neo-mods
net freight ton kilo meters
Pamitene
pay off old scores with
Peguan
pit bottom
policepersons
positive gradient
post-cold-wars
problem of the origin of the protein
Psorergates
pt boats
pterygoid muscles
pubic bones
pulse flow technique
ram steam
random satellite system
RCPS
relative pulse
reminted
remote terminal emulation
rhodium hydroxide
Robiquetia
sales on type
sclero-iridotasis
sea lions
seangreen
senile ectropion
show caves
simultaneous congruence
spinal curvatures
state-court
stratum cinereum
suspended stiffening truss
theopneustic
thiemes
true believer
truncated sprt
unequal pulse
Ureterp
vertical blanking generator
warrant-cards
widle
work of adhesion per unit area
yells