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
aberoptus championus
absorption formula
algal layer
alkaluria
ampullae ossea superior
analog-to digital converter
anti-malarial
automatic wages adjustment
Berrya
bogseong (poksong)
boundary value observer
butsudan
C-indicator
canonicalizations
cervical carcinoma
charcots
cone-and-float flowmeter
consequencing
continuous potentiometer
creusets
crucial
czechoes
dasyhelea fulvicauda
decision instant
derris canarensis
dislocation in strain-aging
doubles over
Edisto Beach
Emberiza
enterprise development fund
eoq formula
fedn
fetal phagia
field rank
full shroud
gradient electrode system
haulabout
holagurrl
idiotick
IF clauses
immerse in
intrinsic ionization energy
iso 8326
Isonilex
kick someone when they are down
kidmans
Landouzy-Grasset law
main coolant
marsupial mouse
material fact
maximum angular frequency deviation
mesocola
mythograph
neo-latins
nervous chill
non elastic collision
noninterruptedly
normal position indicator
NRDL
nux vomica alkaloids solution
occation
odd side pattern
operating envelope
p-xylene oxidation
Pakch'ǒnsu
Palermitan
palmater
paraphrenia confabulans
Pars transversa
phaeosphaeria oryzae
pipe-line cleaner
plastic support
Platonic hydrocarbons
polite language
pre-encounter
propelling power deduction
pure dyadic sentence
puyt
radik
ravined
Reprotox
rhomborrhina kurosawai
rosehip
roundworn
shelter area
single-particle trigger
somerset maughams
sonograph
spiral source of dislocation
strain hormone
superstratosphere
the drama
trading activity
transversal wave detector
tulk
underwriting's guarantee
unit-cost
unwrap
visual alignment generator (visalgen)
water tunbine
wood physics
wood waterway equipment