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Broadcast: Jan 02 2003 China has announced it plans to launch its first manned spacecraft in the second half of this year to become only the third country to do so. The news comes as China's fourth un

发表于:2018-12-08 / 阅读(73) / 评论(0) 分类 VOA2003(上)-科技先知

Chaotic Orbits Could Cause Catastrophic Collision火星真的会撞地球? Isaac Newton said, I can calculate the motion of heavenly bodies, but not the madness of people. He meant that while people can be unpredictable, the planets are just the oppo

发表于:2018-12-24 / 阅读(72) / 评论(0) 分类 2017年Scientific American(四)月

A Stationary Satellite, part 2 A geostationary satellite orbitsthe planet at the same rate as the planet rotates, so the satellite is always over the same patch of ground. Cool! you say. Id like to have one of those about twenty feet over my house. S

发表于:2018-12-31 / 阅读(66) / 评论(0) 分类 英语听力文摘 English Digest

Comet 彗星 Do you know what a comet is? 你知道彗星是什么吗? A comet is an object in the solar system. 彗星是太阳系中的天体。 It travels around the sun like the planets. 它像其它行星一样绕着太阳转。 Then, why don'

发表于:2019-01-10 / 阅读(72) / 评论(0) 分类 与美国小学生一起学英文第11册

Orbit 轨道 Do you know what an orbit is? 你知道什么是轨道吗? An orbit is the path of a planet when it moves around the sun. 轨道是行星围绕太阳运动的轨迹。 It is similar to a cycling track. 它类似于自行车赛道。 As

发表于:2019-01-10 / 阅读(80) / 评论(0) 分类 与美国小学生一起学英文第12册

Bill Shorten is preparing to sell his policy of reversal on the asylum boat turnback to ALP National Conference. Several Labor MPs have strongly criticized the opposition leader's decision to support the government's turnback policy. Bill Shorten's f

发表于:2019-01-16 / 阅读(69) / 评论(0) 分类 澳洲ABC新闻快递2015年

Chaotic Orbits Could Cause Catastrophic Collision Isaac Newton said, I can calculate the motion of heavenly bodies, but not the madness of people. He meant that while people can be unpredictable, the planets are just the oppositethey glide through sp

发表于:2019-01-20 / 阅读(70) / 评论(0) 分类 2018年科学美国人5月

Chaotic Orbits Could Cause Catastrophic Collision Isaac Newton said, I can calculate the motion of heavenly bodies, but not the madness of people. He meant that while people can be unpredictable, the planets are just the oppositethey glide through sp

发表于:2019-01-20 / 阅读(77) / 评论(0) 分类 2018年科学美国人4月

One type of giant planet orbits very close to its star, we call them hot Jupiters because these Jupiter-like planets are so close that they are blowtorched by the intense heat from the star. The other sort of planet we have found is also bizarre. Wev

发表于:2019-01-22 / 阅读(62) / 评论(0) 分类 自然百科2011年

If there's a black hole at the center of our galaxy, that's gonna force these objects that are really close to the black hole to move much faster than they would move if there were no black holes. So the first thing you wanted to see is there are ver

发表于:2019-01-23 / 阅读(55) / 评论(0) 分类 探索与发现2013年

天文学在我们听力讲座里面算是出现频率较高的话题了,在目前所有的176篇讲座里一共有14篇天文学类的文章,且都是比较有难度的,可以说,天文学类算是我们讲座里的一个重点也是难点了。

发表于:2019-02-09 / 阅读(63) / 评论(0) 分类 托福英语

It was while puzzling over this problem that Bohr was struck by a solution and dashed off his famous paper. Called On the Constitutions of Atoms and Molecules, the paper explained how electrons could keep from falling into the nucleus by suggesting t

发表于:2019-02-17 / 阅读(58) / 评论(0) 分类 万物简史
学英语单词
A-300
acamylophenine
ALGOL dialect
Allium saxatile
aloe ferox will.
ambigu
ambisextrous
anaglyphies
angiomyxomas
Apertura interna aqueductus vestibuli
AShBM
bending moment influence line
black filter
Blumea hieraciifolia
Brenton
bridge type ohmmeter
carbamino compound
cephalochord
characteristic of materials
chrome leather gauntlet
chronic phase
closed half plane
cobalt(ii) fluosilicate
confidence curves
contaction
Cricetulus griseus
crudeform
cyano derivative
damage protection plan
dept-names
domable
elcore
Electrodiathermy
escheve
feeder tube
film version
Gadberry's mixture
Gilmanian
haematology of infection
homeowners
hortensial
hour snail
interior plain
intermediate parallel pack
k section
kellmer
laypeoples
lemon extracts
lerisetron
linearly polarized longitudinal suspension beam
little Ivy
long dash
mancelle
Markuschevich basis
master cave
maximal prime divisor
mean horizontal candles
minimum-loss pad
movillas
musculus pyramidalis auridulae
needle-plate gap
negative amplitude attenuation
Neshoba County
normolized cDNA library
oecophorids
oenologue
oil bath type oil circuit breaker
open port for special use by special zone
parachloroamphetamine
paraxial focus
penillonic acid
pennolene whiteoil
perception of time
Polyphaga
ponytails
portions out
primay jurisdiction
Pyogan
radiometrics
rapid information
reduction period
santokus
scanner aerial image
seismic pickup
Seodaejeon
Serapeum
sinalbins
stack pointer function
tall orders
theory of testing of hypotheses
think'st
tracer aid
unfeignedly
us host
vapours
view cameras
weather and technology trend
Winchester
with unfailing interest
write out a prescription for
ypsilon