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
学英语单词
a toad under the hammer
a/c (account)
alkynamide
anetoderma of alexander
antilocking
atrophie blanche
bark is worse than their bite
baykal range (baykalskiy khrebet)
biogenies
blue state
bonadonna
box type electric furnace
Brooksburg
bubble cloud(ing)
bushland
cigarettes
circumflex artery of scapula
civil date
code independence system
cop knock
diatomite insulating block
dilution of precision
directed mutagenesis
disjointed path
electrizes
elkon
emergency access
ethylphenylephrine
F-30066
facilitating institution
false bill of lading
ferroelectric properties
fishhouse
five-electrode tube
fix up with
geosynclinal system
glyoxylic acid reductase
ground-sheets
H-MRNA
hand-gear
huah
Ilex franchetiana
inertia vibrating screen
infinite dimensional probability distribution
inland sabkha
international standard industrial classification (isic)
jack over
karyomorphic
Krasnodon
leaf fibres
lutianine
Macky effect
macronoisa
Manakara
mesenterial tumor
Microtropis caudata
Milazzo
mischaracterising
moxley
Napier's Diagram
nextbut one
ninety-day wonders
Noire, Mtgnes
oscillating
outcrawls
passive-aggressive personality disorder
Peristylus taipoensis
phase change over switch
physarum aeneum
plane-sections flow line
plasma resonance
platinochloric acid
pointer type declaration
Post system
prefrontal instability line
Processus articulares inferiores
product probability function
radiotelegraph coverage
ranas
revegetates
schoenbergs
search plan for moving target
slayers
sleek down
sleyman
spider frame
square foot
stereometrical
successive line overrelaxation
superior function
support
symbiotic nitrogen fixation rates
tafflers
tearoom
telecardiophone
tire roller
transformational
ultralow frequence amplifier
uninterpreted
verruculogen
voluntory stranding
Yambrasbamba