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1. Oxford American Dictionary

   unessential

   • IPA[ˌənəˈsen(t)SHəl]

   美式

   • adj.
     not absolutely necessary; inessential
2. • 釋義

   adj.

   形容詞

   • 1. not absolutely necessary; inessential a train has broken down, resulting in a call to postpone all unessential travel