时间:2018-11-30 作者:英语课 分类:英语专业四级听写


英语课
Passage 19
Finding the Direction and Location
How can you tell which direction? By day, look for the Sun. It is in the east in the morning and the west in the afternoon. At night, use the Big Dipper to help you find the North Star. It would be better to bring a compass because its needle always points north.
How do you know how far you have gone? You could count every step. Each step is about two feet. You’d better wear a pedometer which is a tool that counts steps. If you know where you started, which direction you are heading, and how far you have gone, you can use a good map to figure out exactly where you are.
Today there is a new way for travelers to figure out where they are. It is the GPS. It has 24 satellites that orbit 1 the earth and constantly broadcast their positions. Someday you may carry a small receiver as you hike and use GPS to find out if you are there yet!


1 orbit
n.轨道;vt.使沿轨道运行;使进入轨道运行;vi.沿轨道运行,环行
  • The space rocket was launched and went into orbit.宇宙火箭发射后进入轨道。
  • We can draw the earth's orbit round the sun.我们可以画出地球绕太阳运行的轨迹。
学英语单词
a head of cattle
arteria radialiss
bayesian equilibrium
bedunged
bestail
blade of grass
blind conk
body-centred cube
bone-lace
Bridget L.
cellular atrophy
chebeague island
checkboxes
Chromolaena
communication control character
consenter
costogenic
Cryptacanthodes
dark skinned grape
demicelebrities
demonetization of silver
Dermodesis
diamagnetic resonance
directive moment
disorder of branched chain aminoacid metabolism
Dolak, Pulau
dragsville
ergasthenia
exchange quotation
feather pulling
Feb.
financial standard
flame cutting machine
flat-headeds
functorial analysis
gamma photography
genus Avicennia
global effect of pollution
grand rond de jambe jet?
hamoud
hand sb a lemon
hollaite pegmatite
Hyclean
I.S.
IEPC
integrated guidance system
it is recommended that
low plastic clay
mandibular first molar
mean distance
Medusettidae
metric spaces
mlakar
Munlochy
muslin glass (mousseline glass)
NC style tool joint
Neodielsia
neurobehaviourals
neurotrophin
nickel-clad steel plate
obleys
oil and gas combination burner
on-carriage fire control equipment
ostraca
overrun shift
parsley-leaved thorns
pass an examination
perspex bar
phantomized
phenol absorber tower
pick-up roller
poking about
potassium dideuterium phosphate
preiere
process steam
quadruple amputation
quasi-stationary level
reinach
restrict a road
return and compensate
rosetto
RTECS
safety pole
sexless flange
skirmisher
Sthanakavasi
stodgy loaf
Strategic sale
supergroup multiplexer
supermoron
Symbranchir
syndrome of yin injured by heat-toxicity
synthetic bag
thiocane
thonzonium bromide
triple carbon-to-carbon linkage
tussah silk unbleached
Types of Document of Vessel
Voith-Schneider propeller ship
wern't
Yau, Shing-Tung
yield the point