1. 名詞
   不可數名詞: 陌生, 不熟悉
   

   同義字詞
   benightedness,cluelessness,ignorance,incognizance,innocence,nescience,obliviousness,unawareness
   

例句

1. That unfamiliarity is a very recent phenomenon.
2. Unfamiliarity can cause much headache and stress.
3. Gallup was not fined because of her unfamiliarity with the law.
4. His unfamiliarity with it was not, however, the result of indifference.
5. Unfamiliarity with the new system has probably made him a little halting.
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