时间:2019-02-03 作者:英语课 分类:自然百科2012年


英语课

 If we are looking for Martian bugs 1, we should search for life forms at least as tough and alien as this.


 
“I’m looking at Mars in a point of view of a microbe. And as a microbe, I really need very, very tiny amount of water. I could probably live my entire life happily in a tiny drop of water about the size of the point of a pen. Now we’ve shown over the years that organisms living in salt crust on the earth have enough sunlight coming in so that they can go through their day-to-day activities but still be protected from the radiation. And we know there’s salt crust on Mars.”
 
Mars has a long term wobble to its orbit and every five million years or so the poles end up titling 45 degrees toward the sun. 
 
“A way of thinking about the Phoenix 2 landing site is thinking about the polar regions on earth. Imagine you are there in winter,/ very inhospitable, very cold, very alien. You think how can anything survive here. Come back six months later and it’s like a different world. The sun is shining, it’s wet, it’s warm. Things are alive and skirring around. So we may be being misled seeing it’s frozen, cold site. And in fact, we are just there at the wrong season.”
 
We know that on earth, some bacteria can survive being frozen for millions of years. They can also eat perchlorate, a highly reactive chemical Phoenix found in the Martian soil. 
 
“Presumably if there was life at the Phoenix site, it had learned the same trick. So there might be organisms that are literally 3 eating the rocks and reacting with perchlorate, below the surface, shielded from the ultraviolet light, just having a great old time five million years ago. The party is over because every body froze, but another five million years, the party will start up again as the Martian summer comes to the north polar regions and the ice turns to water.”
 
 

adj.疯狂的,发疯的n.窃听器( bug的名词复数 );病菌;虫子;[计算机](制作软件程序所产生的意料不到的)错误
  • All programs have bugs and need endless refinement. 所有的程序都有漏洞,都需要不断改进。 来自《简明英汉词典》
  • The sacks of rice were swarming with bugs. 一袋袋的米里长满了虫子。 来自《简明英汉词典》
n.凤凰,长生(不死)鸟;引申为重生
  • The airline rose like a phoenix from the ashes.这家航空公司又起死回生了。
  • The phoenix worship of China is fetish worship not totem adoration.中国凤崇拜是灵物崇拜而非图腾崇拜。
adv.照字面意义,逐字地;确实
  • He translated the passage literally.他逐字逐句地翻译这段文字。
  • Sometimes she would not sit down till she was literally faint.有时候,她不走到真正要昏厥了,决不肯坐下来。
学英语单词
abranchiates
Acer tenellum
acid-consuming
Adinandra formosana
afkacs
Alta California
aramus guaraunas
averter
bitter fleabance
bozorgmehr
brezhnevite
cc(congestion ceased)
CEA (control element assembly)
checked into
concurrent application
deauthorised
dependency population
distance visions
endomorphism ring
eous
equidistant scale
Eucaulen
evacuation fan
exigendary
fantasy test
fart sucker
garniture of boiler
glaucescens
grease one's palm
hand horse clipper
have a choice
heave mode
helical fash lamp
horserider
hyperchromic group
impacting gear
import inflation
incidental work
inngendure
instant of failure
inundable
jack leg
Johnson slasher
jury array
key reference
knephopelagic
Lenhartz diet
lower crown height
manufacturing policy
marginal cost pricing in practice
Mavume
memory channel
metral leaflet
milling cutter shank
minmaxer
monolithic microwave integrated circuit amplifier
myriachit
nicads
no such
Omphalogramma minus
onthophagus (matashia) yubarinus
operating bypass
oven-fried
parupeneus pleurostigma
pelfrey
photoblepharons
piecrust promise
Piper forceps
place under guardianship
plot of residuals
portias
precision of calibration model
production model
progerias
propitiator
prose
quenching and age hardening
rabejacite
radiata pine
radioactive daughter element
rain making
recans
redmaidss
sajous
Severnyye Uvaly
sine wave response
slant range for antennal measurement
sperm cells
start at the bottom
station coordinate
sternocostal ligaments
swarthinesses
teno-
thortveitites
took a hike
trade-school
treeing
Trieste, Prov.di
trio sonatas
tsataensis
unerrable
wilkeite (var. apatite)