-
-
- 彗星和其他的行星同样是太阳家族的成员。
Comets are just as much members of the sun's family as (are) the other planets.
- 火星是太阳系的第四颗行星。
Mars is the fourth planet in order from the sun.
- 彗星象行星一样绕太阳运转，然而其轨道呈狭长的椭圆形。
Comets move around the sun like planets, but in long oval course.
- 土星是依次离太阳的第六颗行星。
Saturn is the planet sixth in order from the sun.
- 我们太阳系的行星有水星、金星、地球、火星、木星、土星、天王星和海王星。
The planets of our solar system are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.
- 地球是一颗行星。
The Earth is a planet.
-
-
