planet

planet, star

这两个名词均可表示“星”之意。
planet: 指围绕太阳运转的行星。
star: 多指恒星，也指天空中的群星。可引申指一切星状物或文体等领域中的知名人物。

名词 planet:

1. (astronomy) any of the nine large celestial bodies in the solar system that revolve around the sun and shine by reflected light; Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto in order of their proximity to the sun; viewed from the constellation Hercules, all the planets rotate around the sun in a counterclockwise direction
   同义词：major planet
2. a person who follows or serves another
   同义词：satellite
3. any celestial body (other than comets or satellites) that revolves around a star

1. Mars is the fourth planet in order from the sun.
   火星是太阳系的第四颗行星。
2. Saturn is the planet sixth in order from the sun.
   土星是依次离太阳的第六颗行星。
3. The planets of our solar system are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.
   我们太阳系的行星有水星、金星、地球、火星、木星、土星、天王星、海王星。
4. The Earth is a planet.
   地球是一颗行星。

plan.et

n.（名词）
A nonluminous celestial body larger than an asteroid or a comet, illuminated by light from a star, such as the sun, around which it revolves. In the solar system there are nine known planets: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto.
行星：比一颗小行星或一颗彗星大的不发光的天体，由它绕转的恒星，如太阳的光所照亮在太阳系中有九个已知的行星：水星、金星、地球、火星、木星、土星、天王星、海王星和冥王星
One of the seven celestial bodies, Mercury, Venus, the moon, the sun, Mars, Jupiter, and Saturn, visible to the naked eye and thought by ancient astronomers to revolve in the heavens about a fixed Earth and among fixed stars.
古行星：能够用肉眼看到七个天体之一，水星、金星、月球、太阳、火星、木星和土星，古代天文学家认为它在天空中围绕着固定的地球和固定的恒星中旋转
One of the seven revolving astrological celestial bodies that in conjunction with the stars are believed to influence human affairs and personalities.
命运星辰：七个涉及占星术的天体之一，它与恒星一起被相信能影响人类事务和人的性格

来源：
Middle English
中古英语
from Old French planete
源自 古法语 planete
from Late Latin planôta
源自 后期拉丁语 planôta
from Greek planôtôs
源自 希腊语 planôtôs
variant of planôs planôt-
planôs的变体 planôt-
from planasthai [to wander] * see pel…- 2
源自 planasthai [漫游] *参见 pel…- 2