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
8-oxo-dGTP
a terrestrial plant
acetic fermentation
adrenalin inhalant
Alexandrian
alluvium
alternate blade cutter
angle auger
antinutritional
appear as
approved agenda
Aptandraceae
automatic roll-type filter
blepharophyllum
brand-new
Brestovitsa
browst
bugryn (buhryn)
calcarone
cam follower lever
chart for production
colombianos
communautaires
coupling unit
cryocurettage
cyclotrigallanes
CYSA
davit keeper
diaminobenzophenone
dotted line marker
endplays
estoppel by verdict
femto-gram
ferrite-excited machine
first baron marks of broughtons
first species rule
Flu-glo
Haleyville
hard points
hexsamine
housebuying
hyperoxygenate
i-closed
Ilintsy
installation and maintenance conditions at field
internal morain(englacial moraine)
isopropyl benzene
Kalinzi
krukow
langhammer
larrykin
lawcourts
leap in
luther
marimbaphone
marrow-breaking
material quantity
mild steel welding rod
modal acceleration
moiseyev
mukim
negative impacts
nezer
object program size
orful
ottava sotto
para-actinomycosis
patholysis
Petzetaki's tests
pneumatic servo motor
pneumoerysipelas
program unique control data
pseudonaviculae
public transport priority
queueless
re-envisages
reform through labor
reuse of wastewater
rotating-crystal method
rubidium hexafluorosilicate
rutic
sales trainee
sarisas
selection or decision process
sherie
shoulder heads
single point load
single-acting piston pump
Sisaket, Changwat
stepwise program construction
sunken track
temporal distance
throw off the track
tracking scope
undercarriage bay
urohematonephrosis
water-saturated test
Webster method
weight distribution of locomotive
whole time
yum