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1. Oxford American Dictionary

   annular

   • IPA[ˈanyələr]

   美式

   • adj.
     ring-shaped
2. • 釋義

   adj.

   形容詞

   • 1. technical ring-shaped complex craters have uplifted central structures surrounded by an annular trough and a fractured rim 同義詞 circular, ring-shaped, disk-shaped, round, technicaldiscoid