Artificial intelligent assistant

impossibility

impossibility
/ɪmˌpɔsəˈbɪlətɪ; ˌɪmpɔsə`bɪlətɪ/ n[U, C]
    the impossibility of any improvement 无改进之可能
    a logical impossibility 逻辑上不可能的事.

牛津英汉双解词典

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