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1. Oxford Dictionary

   aphelion

   • IPA[apˈhiːlɪən]

   英式

   • n.
     the point in the orbit of a planet, asteroid, or comet at which it is furthest from the sun

   • noun: aphelion, plural noun: aphelia

2. • 釋義

   n.

   名詞

   • 1. the point in the orbit of a planet, asteroid, or comet at which it is furthest from the sun Mars is at aphelion
3. • 更多解釋

   aphelion

   • IPA[əˈfēlyən]

   美式

   • n.
     the point in the orbit of a planet, asteroid, or comet at which it is furthest from the sun: Mars is at aphelion

   Oxford American Dictionary