unanswerable /ʌnˈɑːnsərəbəl/

• 1. 

  ADJ If you describe a question as unanswerable, you mean that it has no possible answer or that a particular person cannot possibly answer it. 不能回答的

  例：

  They would ask their mother unanswerable questions.

  他们会问他们母亲不能回答的问题。

• 2. 

  ADJ If you describe a case or argument as unanswerable, you think that it is obviously true or correct and that nobody could disagree with it. 无可辩驳的

  例：

  The argument for recruiting McGregor was unanswerable.

  录用麦克格雷格的理由是无可辩驳的。