时间:2018-12-28 作者:英语课 分类:初学者听力文摘精选


英语课

Under Pressure压力之下



In physics, pressure depends on the amount of force acting 1 on a surface and on the size of the surface. The smaller the surface, the greater the pressure. Let’s say that a woman steps on your toe; she weighs 120 pounds. If she’s wearing flat shoes, you would feel the force of 120 pounds spread out over the whole heel of the shoe, maybe around 4 square inches. So the pressure would be 120 divided by 4, or 30 pounds per square inch.

物理学上,压力大小取决于作用在表面力的大小和表面积大小。表面积越小,承受的力越大。假设一个重120磅的女人踩到你脚趾了。如果她穿的是平底鞋,你会感到120磅的压力分散到鞋子的整个根部,大概4平方英寸。所以120磅的压力平均分为4份,或者每平方英寸30磅的力。



But when she steps on you with a high heel, the whole 120 pounds of force is concentrated on a heel that is maybe one eighth of one square inch in area. Now the pressure of her step is eight times as much, or 240 pounds per square inch instead of 30 pounds per square inch. Of course, it hurts more.

但如果她穿的是高跟鞋,整个120磅的力集中在或许只有八分之一英寸大小的鞋跟上。她踩下去的压力也是8倍之多,或者说240磅每平方英寸而不是30磅每平方英寸。当然,这更痛。



It works 2 the other way, too. Spiked 3 heels are painful to wear because your weight is all on the spike 4 and the ball of the foot; therefore, the pressure is much greater on these points than in running shoes, where your weight is spread out over the whole bottom of the foot.

同理,穿细高跟鞋是痛苦的,因为你的重量全压在在细跟和脚趾球上。因此,压力在这些点上要比重量被分散在整个脚底的跑鞋大很多。

 



1 acting
n.演戏,行为,假装;adj.代理的,临时的,演出用的
  • Ignore her,she's just acting.别理她,她只是假装的。
  • During the seventies,her acting career was in eclipse.在七十年代,她的表演生涯黯然失色。
2 works
n.作品,著作;工厂,活动部件,机件
  • We expect writers to produce more and better works.我们期望作家们写出更多更好的作品。
  • The novel is regarded as one of the classic works.这篇小说被公认为是最优秀的作品之一。
3 spiked
adj.有穗的;成锥形的;有尖顶的
  • The editor spiked the story. 编辑删去了这篇报道。 来自《简明英汉词典》
  • They wondered whether their drinks had been spiked. 他们有些疑惑自己的饮料里是否被偷偷搀了烈性酒。 来自辞典例句
4 spike
n.长钉,钉鞋;v.以大钉钉牢,使...失效
  • The spike pierced the receipts and held them in order.那个钉子穿过那些收据并使之按顺序排列。
  • They'll do anything to spike the guns of the opposition.他们会使出各种手段来挫败对手。
学英语单词
adjustable-bearing
aqua bulliens
aqueduct bridge
artificial rumen technique
asbestos-cement
azlon
backward forward counter
bar buoy
benoir
bilbo
blue-grass
Cedynia
cicad
Cleistogenes mutica
cloud point method
co-enzyme
comma symbol
Contact Plating
cross-shareholding
crystallographic planes
defoliating agent
differentialearning
domesticated
dongnim (tongnim)
Ensete glaucum
farmers-general
Federal Rules of Evidence
fluorescein-natrium
free air facility
genus otarias
genus sphaeralceas
get something over
gwp
hackworks
hand-delivereds
helical spline type actuator
heteroskedasticity
hexagonal close-packed structure
high-calibres
ilb
increasing failure rate (ifr)
Jesus revolution
jungle asphalitis
kelabit
laterisation
Leptothrix buccalis
lineae albicantes
low-pressure pneumatic spraying equipment
loyalists
ludibrious
lutjanus argentimaculatus
mamelon(mameron)
masakoes
mausolean
meije
micron-size
Moyen-Cavally, Région du
Nazare
nickelschneebergite
nonrenewers
pco2
peace of God
phricasmus
pneumotomete
polar cyclone
pompelmouses
potassium selenide
proacrosin
psychokym
public float
reaction-diffusion equation
reed type
representative module
resource allocation decentralized
rhyacichthyids
sarcophyton glaucum
seal end plate
sell-sword
set complement
Siliquamomum
stroke cure
sub-bass
Swedish anchory
telemetering sender
time average equation
to bite at...
to finish school
toddest
transfer founds
turn-on snubber inductance
tyre
us beef
valve body
vantation
varty
venders
vertical replenishment
volatile capital flows
voleur (france)
welding unit
York gum
Zathabyin