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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学英语单词
ablation of a subliming solid
adorableness
akaki beseka
altruistic behaviour?
anchor wood
apartment-hunting
apathist
authorization form
autocorrelators
automatic program verification system
bjelkite
bloodied nose
Bogoslovka
branch prediction buffer
breast pain
car inventory
carbon-to-carbon linkage
cattle grub
cent per cent
chemical formation
cloud seeder
correction measure
count-out
curve drawing instrument
curved spring bar
cycloiropia
disestablishmentarianism
disposition of leaves
drain outlet
dumdum
eavesdrops
enseer
environmentally hazardous
epiphoneme
eutrocyte
exponential doubling time
exuscitated
fiq
fixed control storage
Franconi, Antonio
free daughter cyst
fusiella
get sb nowhere
glass bulb forming machine
Grand Duchy of Lithuania
Guadalén, Embalse de
gulphe
hemivariate
high speed gun
hypogastric plexuss
idle-activity variance
inlet diameter
kaposi's dermatosis
Kilchrenan
laconism
marcantel
mechanical dysfunction of prosthetic valve
mechanized welding
metroliners
micropascals
microseismic period
Motofen
nerf net
noto
one way linkage
ons
operational evaluation
Otakar I
output regulator
pars opercularis
pnpn-diode
potier
promotional orientation
rantipole
receivableness
reinstater
remote delivery
rotatory dispersion
rothbarts
rust remover
sales orientation
scaled distance
secondary air injection tube
sequence of neighbo(u)rhoods
Shinano River
side entry nozzle
single-column lathe
sliced off
slumpage
sob-stuff
some
special techniques
speed-climbing
stainless steel mineral spring pump
stationary camera technique
submarine sedimentology
Sullane R.
tellurometer survey
tempo di valse
thread of oakum
two-way carrier acquisition time
unequal treatment