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
ac measurement
animize
assembling a program
banerji
binary-weighted ramp generation
boundary particle
broadenings
burst cartridge detection equipment
cakebaker
calcifames
capsular hemiplegia
certificate market
Chocolate Mountains
cold-formed structure
coldhardiness
Colossus of Rhodes
consignmentsheet
cool your heels
Dasuya
desuperheater spray
directly unstable
discharge electrode rapping mechanism
Discount Note
doffing mechanism
drilling state
embossing iron
fire hose with inside lined rubber
first order factor analysis
first-waver
fitting pin
garage
genus picrasmas
glosso-palatine arch
Goldwaterism
health occupations education
Herbarin
homozygous chromosome
Huallanca
hydraulic safety valve
ibit
inferior use
invidias
job-related
Krynica
loan extended to ...
low energy relay
marital deduction
martha grahams
material platform
mediofrontal
moment axis
monetary speculation
mortar conveying pump
moville
munidopsis taiwanica
MVD
nitrogen heterocyclic
not put it past someone to do sth.
offshore cluster wells
old womanish
Orangewoman
Oseen flow
our Master
ovarian germinal epithelium
parastrangalis chekianga
paraverbally
paying shell
phosphatidylserine
pichurim bean
play-doh
Podolampaceae
Pointis-Inard
processing of denture
profondeur
public transport fare
purda
put one's eyes together
red billerry
relaminarized
revolving table
roe
run past
sailing order
sentinelship
simple transmission electron microscope
skeleton facies
sling operation of urethra
small master
sporothrix isarioides
spray apparatus
standard fading
sticking-point
stomachically
subminerring
synchrofax
throttle-governed turbine
two compartment ship
urinary bladder
vestibuli
virus-free
voltage takeoff
Zarzaïtine