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
a stitch of
alma maters
aluminium-nickel
ammonium aluminate
amnioinfusions
API degree
Bayon state
be acted upon by temperature changes
Bretton Woods Agreement Act
calcium cyananide
Chalcidian
check amplifier
Chief Education Officer
cie 1976 lightness
consumption per head
demethylpodophyllotoxin
derivative accounting convention
detachables
diphenylethylene
dishallowed
double eccentric gear
Dovyalis caffra
dynamic testing machine
enthraller
epicadmium
Equipment Interchange Receipt
eucalyptus viminaliss
excursion area
farmland capital construction
Federation of Bosnia and Herzegovina
female condoms
fenestrated sinusoid
ferropumpellyite
for the better
frequency-division multiplexing
gater's medium
glow sticks
Great Falls Lake
higher-earning
Hirundinidae
Ituango
ketelsen
kiviruusu
labour reform regulations
laser aligner
long-haul modem
lubricant pigment
luminous capacitor
machinists microscope
Mahagi Port
Md. R.
mean square modulus
microchannel plate (mcp)
Mischief comes by pounds and goes away by ounces.
multibutton telephone set
multiengine plane
multiple regression model
multiregional hypothesis
narrow-band selective receiver
nonkey domain
notwheat
out-of-seat
ozzmosis
Parsonnet
Pellaea
peristomal irritant contact dermatitis
petroglyph
physogastric
plastic bushing
pohnpei (ponape i.)
pozzoes
privileged creditor
quantity of reflux
refractory hard metal
remote-indicator rotameter
removable section
repsols
reserve for expansion
sabianism
scavengingsystem
set sb.'s teeth
shock seeding
short - term loan
SMGT
Smilax kwangsiensis
sophiatown
Sotnikovskoye
soucek
standard information
stormes
Strategic Air Command security system
subpolar airmass
symmetric wave
taijing-kyofu-shou
texting
thrash sth out
to take something lying down
tonsilloprive
unplunge
water coolant
western united statess