时间:2019-01-22 作者:英语课 分类:自然百科2012年


英语课

 And the icy grains on the Saturnian beaches are washed by passing traffic. When a moon comes by, it creates a wake just like a motor boat creates a wake that goes behind it. And I kind of imagine the ring particles doing an intricate cosmic dance around the planet, and I can almost picture like little ballet dancers that each with their own orbits and paths, and sometimes colliding and encountering, and sometimes not. 


 
 
 
Deeper secrets of this cosmic ballet are revealed, courtesy of a seasonal 2 trick of the light. Once every 15 earth years, as Saturn 1 makes its slow trip around the sun, summer swops hemispheres. In 2009, Cassini was in a perfect position to witness equinox on Saturn. 
 
 
 
The sun at exact equinox will be shining exactly adjoining to the rings, but a little bit before / a little bit after, the sun will be low to the rings, just like the sun is now low/ from London. And invertible 3 protuberances either up or down below the rings will pass very long shadows, and we have in fact found that the rings aren’t completely flat, there are places where the ring particles in fact form these structures that soar a mile or 2 or 3, above the planet rings. The first time in 400 years, we now know that the rings are 3 dimensional. 
 
 
 
Enormous and enormously complicated, the rings also form a major part of Saturn’s amazing weather machine. Upon arrival you might be slightly disappointed that the cloudy face of Saturn looks a little plain. But the planet beneath the rings is wild at heart.

n.农神,土星
  • Astronomers used to ask why only Saturn has rings.天文学家们过去一直感到奇怪,为什么只有土星有光环。
  • These comparisons suggested that Saturn is made of lighter materials.这些比较告诉我们,土星由较轻的物质构成。
adj.季节的,季节性的
  • The town relies on the seasonal tourist industry for jobs.这个城镇依靠季节性旅游业提供就业机会。
  • The hors d'oeuvre is seasonal vegetables.餐前小吃是应时蔬菜。
adj.(可)倒转的,(可)颠倒的
  • We shall prove that the sphere of any infinite-dimensional normed space is invertible. 我们将致力于证明任何无穷维赋范空间的球面皆为可逆。 来自互联网
学英语单词
2-methylcortisol
aceraius grandis
Aconitum refracticarpum
allantois chorioidea
aquachloral
arsecheek
avant-gardists
back-channeled
be better of
bean tree
Biankouma
body-thrusts
buarques
bwe
C-Prolog
cable distribution point
Chattertonian
claisen para-rearrangement
coati-mundi
colour screw
Crookes' lens
cumulative error
cylinder cover bolt
date of clearance
dibutyryl
Diphyllobothrium erinacei
diplosomites
dome cap
drip gasoline
drywell ambient temperature
error locating
Euro share market
exhibition space
famale worker
fineberg
flunk
foam in hibitors
foreign exchange option
furnace transformer
gross out
half-bottles
heavy lorry
heterodyne repeater
household word
immanacled
income tax authority
intermodal freight terminal
johann maier ecks
josher
khanaqin
Kundsen-langmuir equation
Kutta-Joukowski airfoil
line broadening
linearly equivalence
lorente
lump salt
mating plug
melomelus
Middeldorpf's triangle
near-optimality
neurogenin
non-parametric cointegration
non-provisional
normal atmosphere
nucleus of the solitary tract
nurserygirl
Odawara
orbitosphenoids
Oto-Manguean
owner-like
phase contour
pig pile
plocamium telfairiae
Plutonian
positive vector
pressure-feed oiling
pullulatings
rabbet line
residual noise
reverse intergenerational influence
rodder
sael
sales record
sayan
scrambly
Silicon Wadi
single-action pressing
spongy brake pedal
structural basis
submolecule
sunk-in
Talodex
test harnesses
thunder thighs
torcious
transition state,transition complex
trimmed in bunker
unaccused
unbenzoled petrol
white mahogany
whitenest
zoocoenology