时间:2018-12-03 作者:英语课 分类:探索与发现2014年


英语课

  Steven Jabs search for remaining fragments, using a custom-built metal detector 1 rig.


  Meteorites 3 will have iron in them, and it's ? So not only  will magneticbe attract to it, but also metal detector will be able to pick it up. Every year, over eighteen thousand meteorites lock onto collision course with the earth.
  When meteorites encounter our atmosphere, they are travelling at the speed that they acquire moving through the vacuum  space. And typically, they are travelling at many thousands of miles per hour. 
  As they head down to earth, they cut through the outer reaches of our atmosphere. But once the meteorite 2 enter the mesosphere, the air starts pushing back.
   We can't see the air around us. We can only feel it on really windy days like this. But a meteorite encountering our atmosphere definitely feels the air and that is because it's travelling so quickly. When it encounters our atmosphere, the air in front of the meteorite can not get out of the way in time. It's almost like the meteorite hitting a solid wall like a block of concrete.
  As the air in front of the meteorite compresses, it also heats up to more than three thousand degrees Fahrenheit 4. Eventually it bursts into flame, lighting 5 up the sky. When you saw a falling meteorite or a shooting star, it's actually the protective shield of air that you see burning, not the meteorite itself.

1 detector
n.发觉者,探测器
  • The detector is housed in a streamlined cylindrical container.探测器安装在流线型圆柱形容器内。
  • Please walk through the metal detector.请走过金属检测器。
2 meteorite
n.陨石;流星
  • The meteorite in Jilin Exhibition Hall is believed to be the largest in the world.吉林展览馆的陨石被认为是世界上最大的。
  • The famous Murchison meteorite smashed into the Australian ground in 1969.1969年著名的默奇森陨石轰然坠落在澳大利亚。
3 meteorites
n.陨星( meteorite的名词复数 )
  • Small meteorites have left impact craters all over the planet's surface. 这个行星的表面布满了小块陨石留下的撞击坑。 来自《简明英汉词典》
  • One theory about the existence of extraterrestrial life rests on the presence of carbon compounds in meteorites. 地球外存在生命的理论是基于陨星上存在碳化合物质这一事实的。 来自《简明英汉词典》
4 Fahrenheit
n./adj.华氏温度;华氏温度计(的)
  • He was asked for the boiling point of water in Fahrenheit.他被问到水的沸点是华氏多少度。
  • The thermometer reads 80 degrees Fahrenheit.寒暑表指出华氏80度。
5 lighting
n.照明,光线的明暗,舞台灯光
  • The gas lamp gradually lost ground to electric lighting.煤气灯逐渐为电灯所代替。
  • The lighting in that restaurant is soft and romantic.那个餐馆照明柔和而且浪漫。
学英语单词
-dromous
AE (available energy)
aifs
Alcaligenes faecalis
amathila
Aulocystis
automatic protection
basles
beauty parlour
bimetry
bivariate optimizing control
book-trades
book-value shares
boondocking
bootsteps
BOT (build-operate-transfer)
car repair
ceiling height indicator
cerebral arhythmia
Chuckla
chymases
cleaning web indicator
clear makeup
complex body parts
convallotoxin
critical shortage
cyclone scrubber dust collector
Depakin
desuperheater
detonated dynamite
differential pulley (differential sheave)
dipipanone
direct air-cycle reactor
dragon tank
Einthoven, Willem
Farnesiferol
faydom
fermented
filled weld
food fermentative microbiology
fossil lake
free - lance writer
frizers
geological map-reading
harry lauders
highly elastic friction coupling
hockled
ICUP
initial release
intra-tumoral
lema (lema) coronata
Lepidium
lesser punishment
leukoareosis
local control device
locus of c.g.
lube oil reservoir
malapropistic
mantini
menigoencephalitis
milk tumor
Moscow school
myodemia
Mórahalom
narrow-sense BCH code
nuclear demagnetization
number of teeth of virtual
oblimin rotation
offsite emergency plan
onrushing
Opijnen
opposite sequence
peristromium
permeation coefficient
polyhydroxyalkanoate
Poppenreuth
Portland Roads
postobit
postprocesses
preacher's hand
Preussen
princes-of-wales plume
profit seeking business
puffinus griseus
Recto-Baryum
redistribution current
retailing concept
rutts
sankha
Security Service
set preferred
shutdown boron concentration
small molecules
student-body
sunset glow
sword arm
symmertroid
synoptic forecast
take our eyes off
virtual memory mechanism
wolframate radical