时间:2018-12-03 作者:英语课 分类:轻松英文阅读


英语课

 2013 is the the year of the comet. The comet PanStarrs will be coming in a few weeks and with a bit of luck we will be able to see it with the naked eye. At the end of the year there is much expectation for the comet named ISON which could turn out to be the greatest comet in a century. But 2014 could be an even bigger show. That’s when the comet C/2013 A1 will make its appearance and the best view will be from Mars.


 
According to NASA the comet discovered earlier this year should pass at a distance of less than 100,000 (one hundred thousand) kilometers from our neighboring planet. NASA scientists say the large comet could even collide with the red planet in October of 2014. The chance is not high—roughly 1 in 2000. But if the comet at 50 kilometers in diameter hit Mars it would leave a 500-hundred kilometer crater 1.
 
Such a comet striking earth would be a global disaster, but on Mars it makes an interesting science experiment. Scientists will know one way or the other in a few months We'll keep you posted.
 
 

1 crater
n.火山口,弹坑
  • With a telescope you can see the huge crater of Ve-suvius.用望远镜你能看到巨大的维苏威火山口。
  • They came to the lip of a dead crater.他们来到了一个死火山口。
学英语单词
abstraction-coupling polymerization
adding storage register
air-particle monitor
amygdalotomies
arch-dukes
arcus venosi digitales
basioglossus
be instinct with confidence
binary eutectic
board management
buoy waterline
carpet pile
coin and feather experiment
confedre
culpatory
data type graphical
Derry Downs
devulcanizing
dictatorial management
diffusion sintering
elastic squeeze-out
electric-hammer
epilogists
exometra
Federweiss
ferro aluminium
flame welding
fuse puller
Gen.
global brand team
goosed
grand duchies
hatam
Hazlov
heat-releasing
hexamethonium
high-angle strafing
incorrectitude
inventory tax
joint capsule (or articular capsule)
King's College, Cambridge
La Habra
lamp, incandescent
large volume production
launching block
Ligamentum gastrosplenicum
load life
MacNutt
maigaris
major oil companies
malmignatte
mantled gneiss dome
match coprocessor
mental soundness
minor exchange
movable tank vehicle
multi-step avalanche chamber
multiclass discrimination classification
Naffziger's tests
natural gas solubility
non-sealed apparatus
nordhorns
on-line enquiry
Orientobilharzia
otrar
over-effect
pale green porcelain
panax transitorius hoo
part lead
pavanes
pedorthic
pile hole
pillas
poodding
present perfect progressive
pure exact sequence
Randia
relay must-release value
scan control unit
ship alternation
slaughter pig
spelling out
SRTL
stalter
stdaxis
stock plots
stock withdrawal receipt
stove heating
super-nationalism
Swazilanders
Swedish bitters
taxi service
thrustings
transversion(freese 1959)
Tuna War
Turia, R.
unfair spring
vlitional
wei-hsin
xenophora solarioides
yamamomo
your spiritual home