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 jolly dog
alphameric typebar
apteric
arvigo
average commodity cost
backdeep
beam-assisted desorption
Bellenden Ker Range
beryllia ceramic
Brackel
bullion cord
Cadoneghe
call generator
CFAA
chislett
clear valve diameter
commit to papers
concrete valve
constant utility
convection snowmelt
cylinder rib
decrement of oscillation
defense advanced research projects agency net
defrauds
delayed neutron fraction
derogatis
dialback
dividing rule
double magazine
duration of cycle
dynamic cumulus
eel-fork
endopharyngeal insufflation
erringtons
error interrupt
eupromus ruber
external condition code
extramedullary hemopoiesis of the skin
fail-soft behaviour
fantail frame
first law of mean
fixated
fortunearia sinensis rehd.et wils.
fossae iliopectinea
fuel pump
gel permeation chromatography (gpc)
get a bang out of
good deal of
guthlacs
Hollymount
holochlamydeous
hub eddy
hybrid microstructure
incenseless
keep the lid on
lead the way in
level inspector
liquidity index
magna assisa eligenda
Mahaneh-dan
mongrelising
mont saint-jean
Montierchaume
MOS flip-flop
multistage generator
Myropil'
nervus plantaris medialis
net foreign exchange gains
New Year
non-motorized
open-learnings
optical memory card
Outagamies
palillogy
peapod.com
PLSA
populares
prehealth
psychographs
range of gamma-ray energy
regenerative airheater
relaxation of electron distribution
remote-reading
sashkin
siderophil
single crystal tungsten wire
soil conservation extension
solar cell short circuit current
strong nonlinear patterns
strumousness
timazite
Trigonholaspis
unadept
vacuum condensation
Vinningen
water-jug
Wayi
Webb County
whitmeate
wood oil
you can bet your boots