时间:2019-01-29 作者:英语课 分类:万物简史


英语课

   The reason we can be reasonably confident that such an event won't happen in our corner of the galaxy 1, Thorstensen said, is that it takes a particular kind of star to make a supernova in the first place.


  索尔斯坦森说,有理由相信,这种事情在星系的我们这个角落里不会发生,这是因为,首先,形成一颗超新星要有一种特别的恒星。
  A candidate star must be ten to twenty times as massive as our own Sun and "we don't have anything of the requisite 2 size that's that close. The universe is a mercifully big place." The nearest likely candidate he added, is Betelgeuse, whose various sputterings have for years suggested that something interestingly unstable 3 is going on there. But Betelgeuse is fifty thousand light-years away.
  恒星非得要有我们的太阳10-20倍那么大小才有资格,而"我们附近没有任何符合这个条件的星球"。非常运气,宇宙是个大地方。他接着说,离我们最近的、很可能有资格的,是猎户座;多年来,它一直在喷出各种东西,表明那里不大稳定,引起了大家的注意。但是,猎户座离我们有5万光年之远。
  Only half a dozen times in recorded history have supernovae been close enough to be visible to the naked eye. One was a blast in 1054 that created the Crab 4 Nebula 5. Another, in 1604, made a star bright enough to be seen during the day for over three weeks. The most recent was in 1987, when a supernova flared 6 in a zone of the cosmos 7 known as the Large Magellanic Cloud, but that was only barely visible and only in the southern hemisphere—and it was a comfortably safe 169,000 light-years away.
  在有记载的历史上,只有五六次超新星是近到肉眼看得见的。一次是1054年的爆炸,形成了蟹状星云。另一次是在1604年,创造了一颗亮得在3个多星期里连在白天都看得见的恒星。最近一次是在1987年,有一颗超新星在宇宙一个名叫大麦哲伦云的区域闪了一下,然而仅仅勉强看得见,而且仅仅在南半球看得见--它在16.9万光年以外,对我们毫无危险。
 

n.星系;银河系;一群(杰出或著名的人物)
  • The earth is one of the planets in the Galaxy.地球是银河系中的星球之一。
  • The company has a galaxy of talent.该公司拥有一批优秀的人才。
adj.需要的,必不可少的;n.必需品
  • He hasn't got the requisite qualifications for the job.他不具备这工作所需的资格。
  • Food and air are requisite for life.食物和空气是生命的必需品。
adj.不稳定的,易变的
  • This bookcase is too unstable to hold so many books.这书橱很不结实,装不了这么多书。
  • The patient's condition was unstable.那患者的病情不稳定。
n.螃蟹,偏航,脾气乖戾的人,酸苹果;vi.捕蟹,偏航,发牢骚;vt.使偏航,发脾气
  • I can't remember when I last had crab.我不记得上次吃蟹是什么时候了。
  • The skin on my face felt as hard as a crab's back.我脸上的皮仿佛僵硬了,就象螃蟹的壳似的。
n.星云,喷雾剂
  • A powerful telescope can resolve a nebula into stars.一架高性能的望远镜能从星云中分辨出星球来。
  • A nebula is really a discrete mass of innumerous stars.一团星云实际上是无数星体不连续的集合体。
n.宇宙;秩序,和谐
  • Our world is but a small part of the cosmos.我们的世界仅仅是宇宙的一小部分而已。
  • Is there any other intelligent life elsewhere in the cosmos?在宇宙的其他星球上还存在别的有智慧的生物吗?
标签: 万物简史
学英语单词
a legend in one's lifetime
allodification
angle head cylindrical grinding machine
anglo continental drawing box
antiputrescent
assembly trolley rails
baulk
between you, me and the doorpost
candy floss
cargo in dram
champagne trick
check computations
cistern car
condition
contraction and release
contralateral routing of signals aid
cyclic carousel system
deposition plane
dicerium
digital microwave radio
dip grain
distoclination
dolostone
downstairs
dramatic expression
El Catuco
elastic drive
elder days
eri-silkworm
Femestrone
filling ring
fontanelles
functional earthing
General Agreement on Trade in Services
Grubyella
guidance mechanism
guizhouensis
hemiseptum
herken
high speed adjustment
huff paste
i-cnowen
idyllism
internal flexion
isobutyl carbylamine
kalahari deserts
kick in the pants
Kleihauer
Lake Hopatcong
live hydraulic pump
local authorities management information system
manticulate
marine zooembryology
meissonnier
melanagromyza metallica
more power to you
musculus longitudinalis super ficialis linguae
no sale final
noise by combustion
not getting anywhere
object orientation
organic element analysis
Paphiopedilum concolor
parkering
pharmacons
pile irradiation
pinatas
plasmogen
plutos
Poggiardo
porcelain casserole
productresses
pus-gut
removable louvers
road crew
rural jurisprudence
savinases
scritching
sea monkey
shock absorber body
spinellide
state-led
sulphohydrolase
symphonized
Tao Jun
tempestively
tetrafluoroboric acid
tetrochetus sp.
the course
theriogenology
thermal endurance profile
thermodynamic engine
Tisco manganese steel
touch-toner
traveler's-joy
TV antenna booster
utility requirement document
voltampere switch
white-crowned plovers
yangtses
zeolite water