银河系

HOST: Welcome to AMERICAN MOSAIC in VOA Special English. (MUSIC) I'm Doug Johnson. Today, we play jazz music by a young saxophonist, Hailey Niswanger And answer a question about the history of blue jeans ... But first, we tell about one company's pla

发表于:2018-12-01 / 阅读(694) / 评论(0) 分类 VOA慢速英语2009年(十二)月

Galactic Rotation 银河系自转 Astronomers calculate there is ten times more matter in our Milky Way galaxy than we can actually see. Discover how the orbital motions of stars in the galaxy reveal dark matter -- on today's Earth and Sky. JB: I'm Joel

发表于:2019-01-02 / 阅读(738) / 评论(0) 分类 (科普英语)Earth and Sky

Virgin Galactic Completes Test of Spaceship to Carry Tourists Virgin Galactic says its spacecraft designed to launch tourists into space completed an important test flight on Thursday. The rocket ship, called SpaceShipTwo VSS Unity, climbed more than

发表于:2019-01-11 / 阅读(457) / 评论(0) 分类 2018年VOA慢速英语(十二)月

The super bright quasar phase having ended many billions of years ago, when the fuel that fires violent emissions was completely consumed. But now, with the approaching gas cloud and a prospect of feeding, the black hole should get brighter. Exactly

发表于:2019-01-23 / 阅读(484) / 评论(0) 分类 探索与发现2013年
学英语单词
aerobic biological treatment
Aketi
alfenamin
Allamoore
angiomatous chondroma
arboricultures
azimuth computer
bachelorship
blaastula
bon-accord
bourner
cannibalise
cassida circumdata
centrifugal drill
Cerating, Tg.
Cervantes I.
chemically bonded support
comparative pathology
concavation
condensate sump
Crab-oil
cream caustic soda
critical radius ratio
electrical manipulating emergency
electromechanical protection device
empty neighbour position
feran process
financial rotation
first order pyramid
flight information (region)
Florencio Varela
folk costume
from movement time
get off with sb
GFRP
giovannas
growth in place theory
hair net
harquebuse
hexahydrobenzoic acid
high-capacity storage system
hydroarthroses
ibrams
india tick typhus
inspection of package
inverse kinemation
ladies' lounges
laser electronic data processing set
lie-detector
Livs
lung alveolar plate
m. plantaris
manduction
marie jean antoine nicolas caritats
mastigure
melloni
mixture water
monrovia
non-spill pipe coupling
nonshippers
not suitable
nut-trees
olduvui event
oligosperma
open set mark
Orange C.
parricidous
pitch ratio
planned outage rate
polo mallets
post acceptance
puppodum
Qareh Tekān
Radchenskoye
rattle about in
reaction equation
regeneration sludge
regrooming
rhizopodous
rigging line
salt of the earth
second conditional
semi automatic scale
series flow turbine
shaft-end output
shakerss
sharebody
site selection at engineering stage
skarn ore deposit
Takasugi Shinsaku
tank filling system
tcr-
transfevent
uncasuistly
unhabituate
Vallarsa
vernier dial
vulcanisate
waterproof belt
wiccans
world-souls
zelezna ruda