时间:2018-12-01 作者:英语课 分类:自考英语(一)78讲


英语课













 







LESSoN EIGHT
     TEXT 
    Telecommunication 1 via Satellite
      At the beginning of the twentieth century, there were four powerful means of transmitting and receiving information over long distances: print, photography, telegraph, and telephone. By the middle of the century, both radio and television had become established means of transmitting sounds and/or pictures. In 1964, the olympic Games in Tokyo became the first program to be transmitted via satellite.
      In order to transmit an event such as the olympics via satellite, television signals are first changed into radio waves, which are then sent from a station on earth to an orbiting satellite. The satellite receives the radio waves and sends them back to earth, where another station picks them up and changes them back into television signals. Because any form of sound or visual information can be changed into radio waves, satellites are capable of transmitting not only television broadcasts, but telephone calls and printed materials such as books and magazines.
      The combination of satellites,(s) which transmit information, computers,(s) which store information, and television,(s) which displays information, will change every home into(o) an education and entertainment center. In theory, every person will have access to an unlimited 2 amount of information.
       Another important use of telecommunication satellites was demonstrated in 1974 when the Teacher in Sky satellite transmitted educational programs to classes in remote areas of the United States. In 1975, many people in India saw television for the first time as(when) they watched programs about agriculture and health.
       The satellite also demonstrated how it could provide help to people living in isolated 3 areas where transportation is difficult. For example, a health worker in an isolated area was able to transmit pictures of a patients wound to a doctor far away. He was then able to follow the doctors instructions on how to care for the patient.
       The most common use of telecommunication satellites, however, has been for transmitting telephone calls.


 



1 telecommunication
n.电信,远距离通信
  • Telecommunication is an industry of service.电信业是一个服务型的行业。
  • I only care about the telecommunication quality and the charge.我只关心通信质量和资费两个方面。
2 unlimited
adj.无限的,不受控制的,无条件的
  • They flew over the unlimited reaches of the Arctic.他们飞过了茫茫无边的北极上空。
  • There is no safety in unlimited technological hubris.在技术方面自以为是会很危险。
3 isolated
adj.与世隔绝的
  • His bad behaviour was just an isolated incident. 他的不良行为只是个别事件。
  • Patients with the disease should be isolated. 这种病的患者应予以隔离。
学英语单词
adaptive control theory
age hardened
airc
albuginea of cavernous body of urethra
assize
bake board
bastard wing
baxi
be above sth
Beravina
biocomponent
boltless door
bottom rod
boyste-
C. & S.
cell surface recognition
center-pivot irrigation
chabs
circular stairs
circum.
classical art
cloponone
come forward with
commercial trade
commissura anterior grisea
composs
core packet
crystal failure
deferment of leave
depester
double flats
drama critic
early round-grain nonglutinous rice
ecto-ethmoid
EJava
emergency braking
erythroderma desquamativum
Festuca takasagoensis
foot-hill
four-thread tram silk
fully-factored load
Gennerich's treatment
geochronologic
glare-free screen
hand operated monorail hoist
header bolt
hemi-epiphyte
hinge-line
hyssopifolia
impact paper
intractable pain
inwove
ledger tackle
Lewis and Clark Expedition
lignum et folium trachelospermi
lined sight glass with nozzle
liquid level inspection cock
Magnolia balansae
miss doing
modification message
mudwalling
multiyear budgeting
myospalax psilurus
neuroleptic drugs
non-credible contingency events
nonlinear programming
offiong
overpower design condition
pad sth out
palaeoengineering
periodic time
phytosterolemia
plasma stream
plastron respiration
plenye
red hake
Respenda de la Peňa
Rivers Inlet
rub sb out
Run-D.M.C.
saccule of labyrinth
sagesse
simulated prawn meat
single earphone
sinus histiocytosis
spragueas
steely
Tejano
Theban years
thermosensor
thuringione
Tween-80
typhoon path
Tyroglyphus fnrinae
ungardened
VDFG
volkswil
Volodarskiy
wealthy
weight of modular form
wound coating
Zimbili