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1. Oxford Dictionary

   non-contradiction

   • n.
     the lack or absence of contradiction, especially as a principle of logic that a proposition and its opposite cannot both be true

   • noun: non-contradiction, plural noun: non-contradictions

2. • 釋義

   n.

   名詞

   • 1. the lack or absence of contradiction, especially as a principle of logic that a proposition and its opposite cannot both be true the first law of logic, the law of non-contradiction, states that Beaver and I cannot both be right