时间:2018-12-31 作者:英语课 分类:英语听力文摘 English Digest


英语课

 


 In the 1960s, during the earliest space flights, no one knew exactly how weightlessness would affect eating and drinking.


 
  Would food fly off a plate? Would astronauts have digestive problems, with no gravity to help things along the digestive system? The first astronauts ate rather unappealing food pastes squeezed directly into the mouth from toothpaste-like tubes. Yuck!

  Today, astronauts eat a variety of foods like steak, shrimp 1 cocktail 2, strawberries and butterscotch pudding. Each food is made as appetizing and simple to prepare as possible. Steak, for example, is cooked here on earth and sealed into a reheatable pack. Strawberries are freeze dried, keeping their shape and texture 3 when they’re rehydrated. It’s easy to get water in space, because the fuel cells that supply electricity for spacecraft produce water as a byproduct.
 
  Containers of food have to be taped, magnetized, or velcroed to trays, and astronauts usually dine with foot restraints on-unless they feel like floating around! There’s usually enough liquid surface tension to keep food in its container, but bump a plate or fork, and watch your dinner drift away!
 
  Liquids are even trickier 4. Juice won’t pour out of a container, but simply stays inside. If you shook it out, little globs of juice would fly everywhere! That’s why liquids are squirted directly into the mouth or sucked in with a straw from a sealed container. Once food is in the mouth, there’s no problem swallowing or digesting.

 



n.虾,小虾;矮小的人
  • When the shrimp farm is built it will block the stream.一旦养虾场建起来,将会截断这条河流。
  • When it comes to seafood,I like shrimp the best.说到海鲜,我最喜欢虾。
n.鸡尾酒;餐前开胃小吃;混合物
  • We invited some foreign friends for a cocktail party.我们邀请了一些外国朋友参加鸡尾酒会。
  • At a cocktail party in Hollywood,I was introduced to Charlie Chaplin.在好莱坞的一次鸡尾酒会上,人家把我介绍给查理·卓别林。
n.(织物)质地;(材料)构造;结构;肌理
  • We could feel the smooth texture of silk.我们能感觉出丝绸的光滑质地。
  • Her skin has a fine texture.她的皮肤细腻。
adj.狡猾的( tricky的比较级 );(形势、工作等)复杂的;机警的;微妙的
  • This is the general rule, but some cases are trickier than others. 以上是一般规则,但某些案例会比别的案例更为棘手。 来自互联网
  • The lower the numbers go, the trickier the problems get. 武器的数量越低,问题就越复杂。 来自互联网
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6-azauracil
adjustable inductance
adrenocorticotropic hormone adenoma
atabek
axially
beam relay
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big gap between income
biligulate
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bound ledger
boutons terminaux
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charan (india)
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drying bottle
duration of voltage collapse
Eadwig
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Ernest Thomas Sinton Walton
exstropby
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fast cutback
firm knot
floating type
fluid logic
gastrointestinal influenza
glines
gnomonic map projection
hand-powered emergency transmitter
heavy fighting
hellickson
holadysine
ICBM detection radar
informative prior distribution
International Petroleum Commission
irrigation at flowering stage
jawans
kahlil gibrans
Kirākat
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large size camera
lazy-beds
leaf blotch of wheat
list element
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low-variant
LVIM
m-toluic acid
microcinematorgraphy
Murray Valley encephalitis virus
Naardermeer
Neopicrorhiza scrophulariiflora
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noncondom
ocean observation technology
Optical Distribution Frame
orthochrysotile
oxidation stability tester of lubricating grease
perp walk
Pfedelbach
philosopher's stone
phraseograms
pillars of abdominal ring
point break
postextrasystole
private wire
prolonged second stage of labor
pseudochancre
pulse amplitude selector
queuing behavior
quotient ring
radon seed
Restitutionalist
Rist's diagram
rms prediction error
rogacki
sick field
sinus organ
slice of silicon
solar-assisted reactor
stashin'
streaming radio
subsidiser
terminal toll exchange
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total compensation
tow collecting machine
transfer credit
Tsinghai
tyt
uniconductor waveguide
unsternly
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well endowed
wolph