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
...to the nth degree
adrenal genital syndrome
amino acid geochronology
ancient volcano
aquatic bionics
Armerican cheddar
as is often the case
ASHNS
Bagan Datuk
Benthamian
body interference
boot leg
broomstraw
Butania
calamus scriptorius
CEPHALASPIDOMORPHA
chims
complemented representation
crater depth
cyclobutanol
diameter of shaft
diffraction symbol
diisoamyloxyboron chloride
DMPE
Duse, Eleonora
endemoepidemiology
engineering hydraulics
exudative retinopathy
fake-down
Farewell, C.
filled band level
flare star
forcing crop
free from alongside
gluelumps
granata
Hfr strain
holohemihedron
holy-stone
influent weir
injection life
iodine uptake rate
isofenchyl alcohol
John Citizen
lateral acceleration
life-cultivation
loada
loss of signification
Machiavelli Niccolo (di Bernardo)
marine neuston
minutemen
neoferdina insolita
niggets
operator training
option switch
parapets
permit system
pip echo
plate,slab
post-inspection treatment
predictive power
prescaled
press-fit wearing bushings
prestalk
prestretching
process control instrument
proofed
prototype logic operation
puncher
repper
rockfill dam with concrete facing
safe practices
sales advisor
scarletwork
sclererythrin
sclero-oophoritis
second chance
see someone right
shift of funds
sick-lied
spinal mobility
stack automation
Stephania chingtungensis
sugar alcohols
talk rot
to contribute
to gape
to one's way of thinking
tontos
toucha
tri-N-acetylchitotriose
verdue
videoendoscopic
virtual photon field
vitreous humors
volleyball team
water cavy
working scale
World Patent Index data base
yttrium hydroxide
Yucca carnerosana
zzzz