时间:2019-02-05 作者:英语课 分类:英语新闻


英语课

   BEIJING, Sept. 2 (Xinhuanet) -- The amount of space junk orbiting the Earth could cause fatal leaks in spaceships or destroy valuable satellites, according to a report released by the U.S. National Research Council.


  Computer models have shown that the number of orbital debris 1 "has reached a tipping point, with enough currently in orbit to continually collide and create even more debris, raising the risk of spacecraft failures," the Research Council said Thursday.
  So far, there are 22,000 pieces of debris large enough to track from the ground, but smaller objects could still cause serious damage.
  New international regulations are needed to limit space junk.
  And more researches should be done to test the possible use of launching magnetic nets or giant umbrellas to push the debris further towards the Earth where it would burn up, or into a higher but safer orbit.

n.瓦砾堆,废墟,碎片
  • After the bombing there was a lot of debris everywhere.轰炸之后到处瓦砾成堆。
  • Bacteria sticks to food debris in the teeth,causing decay.细菌附着在牙缝中的食物残渣上,导致蛀牙。
标签: space spaceship
学英语单词
air taxi
allow for the wind
antisubmarine detection equipment
atomic arrangement
Banja Luka
blowdown pump
capacitor tachometer
carbonizes
certificate of non-appearance
chargingup
chukker
church-door
citrus nobiliss
coupon system
cracked tongue
credit easing
curtos obscuricolor
desperate criminals
di-isobutylene
digital controlled plotter
discounted accounts receivable
electron excitation of the nucleus
electroplane camera
erythrocyte rouleaux
expressive trait
exterior liability
extraradical
face lapping mill
fatigue life model
finback whale
Flatwillow
flow of lubricant
for-
free condition
funnel-shaped rectal tube
gas scrubbing system
genus himantoglossums
gradient level
grand opera
granular material
ground-note
guai lan
Gulf Arabic
Hock Monday
Hostacydine
idle-current wattmeter
implantation of internal mammary artery
initial rate of absorption
ion beam
isolation tent
isopropyl-alpha-naphthyl ketone
laminated veneer
latitude of an observer
local mode
low-oil content measuring transformer
ludwig's
macroscopic algae
magnetic orientation
market collateral
maximum module to be cut
mid america
miscellaneous expenditure
neutralizing chemicals
organic pollutant criteria
Ottawa National Wildlife Refuge
outside money
parveens
porphyrilic acid
Portulacaria
post-stimulus
postquestionnaire
psychrapostema
pulser rack
pyloric gland like appendages
racepben
restored section
rosenblooms
serviture
sestertium
skull proper (or cranium proper)
split wedge
stainless steel mineral spring pump
starch-tragacanth thickening
stat sheet
stenochoric species
stepford wives
Strauss's sign
Talinum calycinum
tenontosaur
Tommy John surgeries
two-point perspectiveness
unbalanced centrifugal force
Uniform Securities Act
urban typhuss
vallated
velocity ratio
welded-hollow spherical node
well-dried
wet box
wizenedness
xeroxed
y?jo kabuki (japan)