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
6-hydroxyfibraurin
adaptive logic
alidade rule
Ardle
Aspe, V.d'
Avi.
basifuge
batardeau
bikram
Bingham Lake
black storks
cellulose fabric
Citrateck
ciz
cleaning-up
coccaro
complication of pregnancy
constant definition part
coquylle
cumulative fatigue damage
curb transaction
diagnostic study
disc evaporator
diversity telemetry
dombrovitsa (dubrovytsya)
double-delta connexion
electoral systems
electrochemistry of oxidized metal electrode
electromagnetotherapy
evitated
facility-level
flat wracks
frame demons
frazing
general pharmacology
geoenergetic theory
get the idea
greaseboard
hang by a thread
high-beam headlight
Hometin
indicative terms sheet
Indigofera cordifolia
industry gas turbine
interlocking tile
involuntary manslaughter
job management program
kerplops
l.b.w.
liborio
macromitrium uraiense
monograptid
musculus ciliaris
mushahid
myxophycean starch
naval air warfare center weapons divisions
non-uniqueness
Nucleus preopticus lateralis
outreckons
palatine gland
Penrhyn Bay
plumb bow
preference market
presses-on
prevail against
proper working load
protoplasm disunion
purple clover
Quiscamote, Cerro
relative matrix
republics of lithuania
ruft
said-she
scaridaes
semita
silk manufactures
smear culture
Solyom
splanchnocele
split of total freight
spring exerciser
stand in someone's shoes
static governor
System i
systems tract
tachypneas
tax-breaks
team-based structure
telegram and telex charges
the seventy
to lose you
torsion-fibre
Tutu I.
two-stage method
UDB
unaddressed
underdrawerss
underwater missile
Vankleek Hill
voice-frequency carrier teletype