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
594
Acer metcalfii
after-drying
Almanach de Gotha
ameiva ameiva
anastral mitosis
berdache,berdash
Big Valley
bogwoods
broad-arrow engine
commercial frontage
computer storage hierarchy model
Covenant Code
cryptocarine
darnest
distastefulness
draft apparatus
energetics of ecosystems
external spur gear
fibrocartilago interarticularis
fired heater
formylating agent
fortunacy
garbh
Gettorf
ghutra
Gilbert, Is.
group think
harelipped bat
hose beast
khvansar (khunsar)
label(l)ed atom
lancifolia
laplace's transformation
lattice-type frame
laugh against one's will
leave sth. out of consideration
leptastrea bewickensis
levigating
light triggered alarm
low-frequency rebroadcasting
marmaduc
maximum length of pile
meanly
meter wave
Methods Engineering Council
milliamp
mineralizes
Ministry of Labour and Personnel
mis-sware
modulating valve
monstrant
moozy
n-period moving average
narrative strategy
neurochemical
non-sulfur purple bacteria
nonaggregating
outbidden
Paracelsus, Philippus Aureolus
Paraphlomis gracilis
paravanes
parliamentarian
PB(Pushbutton or Pull Box)
per square inch
pesoizing
phyllachora laurinearum
pickled steel wire
Poa dshilgensis
pregnancy diagnosis
probabilistic fracture mechanics
propelling
prorupt
put something to the touch
Rabdosia excisa
radiolytic gas
recursive definition of domain
safety disc
school law
seawater filtration
semiconductors
Sicayari, Mesa de
sigma notation
ski boot
social identity theory
ST_disease-and-illness_losing-consciousness
steppes
string expression interpreter
suicide cable
Tardamid
templet tamper
twentieth
uniform algebra
untranslatables
Vaitupu
variable threshold decoding
verbal plea
villagers
wall collision
Wuchereria malayi
you've made your bed, now lie in it
zizyphus incurva roxb.