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1. Oxford Dictionary

   sidereal period

   • n.
     the period of revolution of one body about another with respect to the distant stars.

   • noun: sidereal period, plural noun: sidereal periods

2. • 更多解釋

   sidereal period

   • IPA[sīˈdirēəl ˈpirēəd]

   • n.
     the period of revolution of one body around another with respect to the distant stars.

   Oxford American Dictionary