时间:2019-03-04 作者:英语课 分类:CNN美国有线新闻2019年1月


英语课

 


What do the names Whirlpool, Black Eye, and Sombrero all have in common? Are they all appliance brands, names of galaxies 1, special ops forces, or oceanic reefs? These are all the names of galaxies, massive concentration of stars.


AZUZ: Of course, the one we live in is the Milky 2 Way, which would have made that question too easy. And scientists say they have detected some sort of signal from outside it, fast radio bursts that repeat. Radio bursts, which are signals that only last for a millisecond or so, aren't that rare in space. But researchers say that last summer, a Canadian radio telescope recorded a burst six times from the same location, and that is said to be unusual.


This is only the second time that this type of signal has been found to repeat. So, what is it? No one knows.


Some people think they could be a form of communication from extraterrestrial life tr?ying to contact us. But scientists say that's probably not it. The bursts could come from neutron 3 stars or a black hole. What they're hoping is to record more of them so they can be studied and used to explain their origin.



星系( galaxy的名词复数 ); 银河系; 一群(杰出或著名的人物)
  • Quasars are the highly energetic cores of distant galaxies. 类星体是遥远星系的极为活跃的核心体。
  • We still don't know how many galaxies there are in the universe. 我们还不知道宇宙中有多少个星系。
adj.牛奶的,多奶的;乳白色的
  • Alexander always has milky coffee at lunchtime.亚历山大总是在午餐时喝掺奶的咖啡。
  • I like a hot milky drink at bedtime.我喜欢睡前喝杯热奶饮料。
n.中子
  • Neutron is neutral and slightly heavier than the proton.中子是中性的,比质子略重。
  • Based on the neutron energy,the value of weighting factor was given.根据中子能量给出了相应的辐射权重因子的数值。
学英语单词
abreuvoir
accom-plished
acid battery
acid-proof refractory
adnascens
agglutinophore
anchor plant
Bagaroua
baggy top
be under an embargo
bismuth phenolate
Brassica juncea
bronch-
bushs
carpropamid
cartier.com
chloroethyl mercury
clorida japonica
computer and cyber law
conspicuous consumption
control computer interface
data-transmission trap
de-aired clay
design of holding characters in both hands
discharging machine
disgraciately
disharmonious
Drabovka
e-sports
Elephant and Castle
embasement
feudal lordship
Ficus concinna
fire a salute
flight readiness review
flowers of tan
for altogether
forbidden or prohibited act
germ rice
Gestalt, gestalten
glut with
grillos
grounded shield transformator
harmonic field
heat conservation
high-rate discharge tester
horizontal cleavage
hot rolling facilitis
huork
hyperbolic grading
idiogeosyncline
inshurance
interrupting rating of circuit breaker
killing zones
knives linear
left-clicks
lucentamycin
membranous part of urethra
monolepta signata
moringua abbreviata
muck garden
musculus obliquus internus
National Society for Clean Air
noise monitoring unit
overnice
packer setting depth
pauper labor
phosphindolizine
photographic waste
pitting initiation potential
Pleospongia
presanction
qingming
quintuplicating
Ranunculus platyspermus
reciprocal temperature
reconciliation of bank account
recorder jar
recursion relation
retention period
RScP
ruh
satellite temperature
sectio Porro caesarea
self reducing
shiplines
signal rod
slandereth
statistical pattern recognition
tangiwai (bowenite)
tuberculin precipitation
two-flank rolling test
unanalysed
unpossibilities
up-link
veil-
vicarious atonement
wall bore machine
width girth
Wiedemann effect
Yuanlin Township
zone-refined material