时间:2018-12-24 作者:英语课 分类:Scientific American(八)月


英语课

 This is Scientific American’s 60-SecondScience. I’m John Matson, got a minute?


 
Say you need a diamond. You could go downto the jeweler, or you could put some carbon deep underground and let it sitfor a couple billion years. Or you could hop 1 in a starship and cruise 4,000light years over to a dead star called pulsar J1719-1438. 
 
The pulsar is exotic on its own—it's a super-dense remnant of a star spinningat about 10,000 rpm. But far more curious is the world orbiting it, which mightbe called a planet if it weren't so strange.
 
It's about as massive as Jupiter, but much more compact. It may be the remainsof a carbon-rich white dwarf 2 star. But it's been mostly cannibalized by itspulsar companion, and is now just a shadow of its former self. 
 
The object’s incredible density 3 makes it subject to great internal pressure.And that pressure, acting 4 on the carbon-rich makeup 5 of the white dwarf, mayhave crystallized much of it to the particular form of carbon we call diamond.That's according to new research in the journal Science. The next step forastronomers is to find out if the diamond planet has rings.
 
Thanks for the minute. For Scientific American’s 60-Second Science, I’m JohnMatson.

1 hop
n.单脚跳,跳跃;vi.单脚跳,跳跃;着手做某事;vt.跳跃,跃过
  • The children had a competition to see who could hop the fastest.孩子们举行比赛,看谁单足跳跃最快。
  • How long can you hop on your right foot?你用右脚能跳多远?
2 dwarf
n.矮子,侏儒,矮小的动植物;vt.使…矮小
  • The dwarf's long arms were not proportional to his height.那侏儒的长臂与他的身高不成比例。
  • The dwarf shrugged his shoulders and shook his head. 矮子耸耸肩膀,摇摇头。
3 density
n.密集,密度,浓度
  • The population density of that country is 685 per square mile.那个国家的人口密度为每平方英里685人。
  • The region has a very high population density.该地区的人口密度很高。
4 acting
n.演戏,行为,假装;adj.代理的,临时的,演出用的
  • Ignore her,she's just acting.别理她,她只是假装的。
  • During the seventies,her acting career was in eclipse.在七十年代,她的表演生涯黯然失色。
5 makeup
n.组织;性格;化装品
  • Those who failed the exam take a makeup exam.这次考试不及格的人必须参加补考。
  • Do you think her beauty could makeup for her stupidity?你认为她的美丽能弥补她的愚蠢吗?
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学英语单词
4-Salicyloylmorpholine
a type right-of-way
acetyldigoxin
aethetic zoning
aluminum nitride
Amospan
angulus posterior pyramidis
antinociceptives
ateliosis
atom size
bagnio
bald cypresses
bald wheat
balloon fish
belaces
bendini
bhaktas
bioautography
bonxies
buttonlike
carleo
carved lacquer necklace
catheys val.
circulating pledge
cluster of engines
colour correction mask
compass platform
conceptual data
constant staticizer
corn islands
coronal helmet
direct condenser
double butt strap
double open end wrench black finished
electric power distribution panal
elks
exchange equipment
famulating
farandinical
fast-breeder reactor
Federal Reserve Systems
feet-on-the-ground
femas
fish-eating rat
flyhalf
folkeskoles
ghirardini
goes off with
hare's-foot
insulated boundary
Kanapoi
Kool-Aid
lambertianin
loop-locked
made himself at home
Marianologist
methyl silicone resins
microcampylopus laevigatum
moment of forces tending to capasize
negative scotoma
nephron(e)
non synchronized network
output and input
painstakenly
paleo-indians
papodums
paste food
ploughtail
polytetrafluoroethylene fibre reinforcement
prairie mallow
prescription drug advertising
pulsating energy
quadricellular
quiffed
refluxive
removing fire in the lung and resolving phlegm
sa-ree
saboor
schilz
scrimpiness
series statement
skinnis
SNQ
sorted ore
spinibulbar
stablish
suspension rod
tally shop
tap bill
tertiary plants
tetracyclic coordinate
tide-riding water level
troodont
Ungcheon
velocity derived by differential
wallowish
waste
Wehrbleck
wood former
working space register
working with command bars