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1. Oxford Dictionary

   planetary

   • IPA[ˈplanɪt(ə)ri]

   英式

   • adj.
     relating or belonging to a planet or planets；relating to the earth as a planet
2. • 釋義
   • 相關詞

   adj.

   形容詞

   • 1. relating or belonging to a planet or planets a planetary system the laws of planetary motion
   • ▪ relating to the earth as a planet planetary air pollution and climatic change

   planetary nebula

   • n.
     a ring-shaped nebula formed by an expanding shell of gas around an aging star.

   Oxford American Dictionary

   planetary gear

   • n.
     another term for planet gear

   Oxford Dictionary

   planetary gear

   • n.
     see sun-and-planet gear

   Oxford American Dictionary

   planetary nebula

   • n.
     a ring-shaped nebula formed by an expanding shell of gas round an ageing star.

   Oxford Dictionary

3. • 更多解釋

   planetary

   • IPA[ˈplanəˌterē]

   美式

   • adj.
     relating to or belonging to a planet or planets: the laws of planetary motion

   Oxford American Dictionary