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1. Oxford American Dictionary

   exoplanet

   • IPA[ˈeksōˌplanət]

   美式

   • n.
     a planet that orbits a star outside the solar system

   • noun: exoplanet, plural noun: exoplanets

2. • 釋義

   n.

   名詞

   • 1. a planet that orbits a star outside the solar system astronomers discover potentially habitable exoplanet twice the size of Earth
3. • 更多解釋

   exoplanet

   • IPA[ˈɛksəʊˌplanɪt]

   英式

   • n.
     a planet that orbits a star outside the solar system: astronomers discover potentially habitable exoplanet twice the size of Earth

   Oxford Dictionary