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1. Oxford American Dictionary

   planet

   • IPA[ˈplanət]

   美式

   • n.
     a celestial body moving in an elliptical orbit around a star.；the earth

   • noun: planet, plural noun: planets

2. • 釋義
   • 相關詞

   n.

   名詞

   • 1. a celestial body moving in an elliptical orbit around a star.
   • ▪ the earth no generation has the right to pollute the planet
   • ▪ 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 the planets are presently influencing you in a positive way

   outer planet

   • n.
     a planet whose orbit lies outside the asteroid belt, i.e. Jupiter, Saturn, Uranus, or Neptune.

   Oxford Dictionary

   major planet

   • n.
     any of the eight main planets of the solar system, as distinct from an asteroid or moon.

   Oxford Dictionary

   inferior planet

   • n.
     either of the two planets Mercury and Venus, whose orbits are closer to the sun than the ...

   Oxford Dictionary

   secondary planet

   • n.
     a satellite of a planet.

   Oxford Dictionary

   rogue planet

   • n.
     a celestial object that is the size of a planet but does not orbit a star: there may be billions of rogue planets, not bound to any star

   Oxford American Dictionary

   primary planet

   • n.
     a planet that directly orbits the sun.

   Oxford American Dictionary

   inner planet

   • n.
     a planet whose orbit lies within the asteroid belt, i.e. Mercury, Venus, Earth, or Mars.

   Oxford Dictionary

   inner planet

   • n.
     a planet whose orbit lies within the asteroid belt, i.e. Mercury, Venus, Earth, or Mars.

   Oxford American Dictionary

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3. • 更多解釋

   planet

   • IPA[ˈplanɪt]

   英式

   • n.
     a celestial body moving in an elliptical orbit round a star.

   Oxford Dictionary