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
achebes
addlepatedness
african nations
age-categories
anthropoid apes
appreciable impact
as clear as daylight
be pared to the bone
bin head
bollworm
breakbeat
bridlepath
bunk bed with ladder and guard rail
calandre
cell construction
cocain(e)
come up with the rations
contract horizon
conversion of stock
cook shop
danjumas
dauerlauf
debeading
Dermacentroxenus rickettsi
differential porosity
diffuser casing
direct reposition
disturb ecological stability
doubling strake
driven sprocket
drunkard's chair
dynamic capacitor
echinaster callosus
fiebrigilla luteifrons
finger cot
firing party
flow-down burning
food processing plant
full-wave rectification
golden block search method
Gudden's law
hemangiopericytomas
hydrothermal geochemistry
Hyrtl's phincter
imbracement
irrigation with torrential flood
Isobutyltheophylline
James Fenimore Cooper
kalaallit nunaats
Kaung
lac encrusted twig
manganic sulfate
Markhachan
metazachlor
micropaleontologies
monomorium fossulatum
nanosecond electronics
National Recovery Administration
Nicodemia
nominal load-bearing capacity
nonflat
North Tisbury
oil-moistened air filter
operation of precision tool
outlet capacity
over-long
panackelty
parallel nozzle
perfect competition
performance security
Pesqueira
petty cash current deposit
phospho-protein phosphatase
polypyrenous
predicands
proposed resolution
pseudographer
psychophysically
publication scale
Pylodictus
rooties
sacerdotalist
sapphire substrate under silicon
sell-or-process-further decision
Serial covariance
signal degradation
soap boxes
SoundFont
spathulatine
special preferential treatment
stop-wat
suction and discharge valve seat
summer pinching
supercritical steam conditions
superflows
teleinstructional
telemetry simulator
temperature gradient technique
under-inflation
undersleeves
unsoftened
USI (unsolved safety issue)