planet
/ˈplænɪt/noun
1- a celestial body moving in an elliptical orbit round a star行星。
1.1
the planet
the earth地球：no generation has the right to pollute the planet.
任何一代人都无权污染地球。
1.2
- chiefly Astrology & historical a celestial body distinguished from the fixed stars by having an apparent motion of its own (including the moon and sun), especially with reference to its supposed influence on people and events【主占星】〈主史〉命运星辰。
The nine planets of the solar system are either gas giants - Jupiter, Saturn, Uranus, and Neptune - or smaller rocky bodies - Mercury, Venus, Earth, Mars, and Pluto. The minor planets or asteroids orbit mainly between the orbits of Mars and Jupiter.
短语
what planet are you on?
- Brit. informal used to indicate that someone is out of touch with reality〈英, 非正式〉［用以表示某人脱离了现实］你在哪颗行星上?
派生词
planetologist
nounplanetology
noun词源
Middle English: from Old French planete, from late Latin planeta, planetes, from Greek planētēs 'wanderer， planet'， from planan 'wander'.