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
accounting package
alternating true hermaphroditism
anterior faciall vein
arbitrage de jure
armless
artificialism
aspect ratio of weld
Aswad, Ar Ra's al
ate pussy
ayios
Buwayb, Khalīj al
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capeline bandage
centripetal growth
centure
channel current
characteristic dimension
Chrysosplenium hydrocotylifolium
comparative finance
cut dido s
cylinder microtome
dead position
delay in settlement
dellucci
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dual-in-line switch
ego defense mechanism
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equimolal diffusion
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gezhouba
granular myoblastoma
habitus arthriticus
had no acquaintance with
horizontal hand sawing machine
hotch-kiss drive
huanglongbing
hulkiest
hydrocarbon resin
hydroxytetracaine
irrealizable
joint recognition of welding robot
kairoi
knee-length
korean mackerel
lady of the evening
large channels
lazy leucocyte syndrome
Lekh
liquid drive
matrix calculus
Mesozoa
metalsmith
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Moving Picture Experts Group
mutton chop whiskers
natural phenomena
nature-cultures
nonsilicified
opening for business finance
paper cutting
pattern-maker
Phl.
photoplotter
platycodigenin
PLOKTA
postconceptual
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sociomythological
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superconduction transition temperature
Tasmanian
tcas
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temporal muscle
third angle projection drawing
touchin
Transprogestin
Triadica sebifera
url-minder
Urugi
uxoricidal
V-shaped guide
Wattsian
werel
winddriven
zukang