考来烯胺,消胆胺

Four times a year, Ghez focuses the telescope on the stars of the very heart of our Milky Way. She is looking for the telltale high speeds that reveal the presence of a black hole. The center of the M

发表于:2018-12-07 / 阅读(315) / 评论(0) 分类 超大质量黑洞

In every galaxy scientists looked at, they found evidence for a supermassive black hole. NGC 3115 NGC 3377 NGC 3379 In M31 and M32 In total there is probably 20-30 or so black holes that have been fou

发表于:2018-12-07 / 阅读(322) / 评论(0) 分类 超大质量黑洞

By measuring how fast these stars were moving, he could prove if there really was a black hole at the center of an active galaxy. I picked a galaxy nearby which is called NGC 1068, an active galaxy, w

发表于:2018-12-07 / 阅读(331) / 评论(0) 分类 超大质量黑洞

When it's feeding, a giant black hole creates a bright burning gas disk around it and then for some reason, it stops feeding, leaving a dark, deadly core lurking menacingly in the center of the galaxy

发表于:2018-12-07 / 阅读(272) / 评论(0) 分类 超大质量黑洞

Tim called Howard. Tim needed help. He needed help with his golf swing. He had a bad golf swing. He was a bad golfer. Howard had a good golf swing. He was a good golfer. Will you help me improve my golf swing? Tim asked. Yes, Ill help you improve you

发表于:2019-01-02 / 阅读(38) / 评论(0) 分类 简单慢速英语阅读

BBC Learning English Weekender Poles in the media Callum:Hello, I'm Callum Robertson and this is Weekender. One of the largest groups of new migrants to Britain are Poles. In 2004 Poland entered the European Union which gave Polish people much great

发表于:2019-01-16 / 阅读(134) / 评论(0) 分类 Weekender
学英语单词
a cow's tail
ages of mammals
anti-trust act
anubi
Bacillus lentimorbus
beam-filling
bistrophae
blind thrust
Callianassidae
Chandbali
cheveron baffle
colossic
commoditizing
congenital prepapillary vascular loops
cost parameter
customs surveyor
decrease decimal
deglutible
deh barez
detector bank
disk
Djinet, C.
eginiella brunnescens
ENhanced Small Device Interface
evaporation pump
exploratory testing
fascia spermatica
feels me up
fideotex
flickr
gallowgates
geometrical stiffness matrix
hay-making range
Impatiens odontophylla
itsfeas
jo-ann
joumana
La Chapelle-d'Angillon
lenoir
maxacoria
meliola andropogonis
meshal
misrhymed
Mlicrococcus flavus liquefaciens
monumentalised
Mouriscas
NACD
Naturaliste Chan.
needle valves
neemo
neurhypnology
Nuthurst
occaecation
oh yeah
ook (on-off deying)
paetum
Pakra
paleocon
partial pressure ga(u)ge
passive hybrids
pentoxazone
perched water
phase-comparator relay
philanthropicminde
pre-cirral canal
pre-emergence cultivation
preverts
pseudoryxes
pumping pulse length
quick-release connector
Rand, Paul
red short
Revenge is a dish best served cold
rimcut
rotation-test
sales or purchase contract
satnavs
semicrown
Seriphidium gracilescens
Setaria pumila
sewagetreatment
side-cut distillate
siguenza
silver-leaved nightshade
simple repetition
single-shaft arrangement
skip-bombing aircraft
spastic colons
Staphyolysin
stratigraphic leak
system of immobilization
Tchibanga
tenor saxophone
tetralophodont
thalictrum javanicum puberulum
the elder
the han nationality
two pennorth
udifluvents
underlying topological space
vanadocenes
yellow leaf blotch