时间:2019-01-10 作者:英语课 分类:与美国小学生一起学英文第12册


英语课

   Orbit 轨道


  Do you know what an orbit is? 你知道什么是轨道吗?
  An orbit is the path of a planet when it moves around the sun. 轨道是行星围绕太阳运动的轨迹。
  It is similar to a cycling track. 它类似于自行车赛道。
  As long as a person runs on a cycling track, the person will always rotate around the center of the track. 只要人在自行车赛道上跑步,他就会一直绕着赛道的中心旋转。
  The person is like a planet and the center of the track is like the sun. 这个人就像一个行星,轨道的中心就像太阳。
  So why do the planets rotate around the sun? 那么为什么行星绕着太阳旋转呢?
  It is because of the gravity of the sun and the planets. 这是因为太阳和行星之间的引力作用。
  Do the orbits of the planets all look the same? 行星的轨道看起来都一样吗?
  No, Mercury has the most elliptical orbit. 不,水星轨道是最像椭圆。

标签: 小学英语
学英语单词
'Aïn Zitoun
Accretion-borer
afars
ahaggar mts.
Aidi
amundson
antiphonary
areise
ashik
Auwers synthesis
axis of imaginaries
barrel lug
batteree
be know as
Bol'shoy Izyum
Brillon-en-Barrois
Campylium
chemolithotroph
chenstokhov
chiao fang chi
color radiography
cressey
crystalline humour
diffusion credit
dihedral (diplane) calibration reflector
einbender
elziverine
entirely ventilation
equivalent anode circuit
ergatandrous
extills
fiche duplicator
flow nozzle
form wire
fracture resistance curve
gurnipper
homologic
Huntlosen
hypoglycemia therapy
imprisoners
inflexiblenesses
information architect
kareem abdul - jabbar
klurfeld
Kvarken
Lagrange's formula
Legendre coefficient
long head
lost of wits
machine code program
make life easier
middle rectal artery
mons pubiss
motorcycle alarm
Much water has run beneath the bridges since.
national incomes
no mean feat
nonessentiality
nuclear magnetic resonnance
onychauxis
palite
People's Welfare Pharmacies
Permalita
Philipstown
plurry
potassium sodium tartrate
pre-classics
preset device
press against
pro-industrialization
protoconid
Puccinia pusilla
pulmonary circulation mechanics
puseyisms
quinin camphorate
raise the standard of revolt
re assimilation
Remembrall
Republic of Turkey
right to petition
roughdrying
Sac County
salais
sankichi
sight-seeing
skeeve
small user
sorbopyranoses
strong stationarity
super-wealthy
symbolic point
Szechtman cell
tax auditor
teacher
three-forked
thrust bearing temperature
turins
underbolted
VBW
wavy cloth
x-ray emission spectra