至于为什么该这样，还没有人给出明确的答复。
No one has come up with a definitive answer as to why this should be so.
成千上万的心理学家对男人为什么要欺骗和撒谎做了研究，然而他们还没有给出任何具体的答复。
Hundreds of thousands of psychologists have researched about why do men cheat and lie and still they haven't given any concrete answers.
对于世界上为什么会有这样的灾难，现在仍然没有满意的答复。
There is no satisfactory answer for why there is such suffering in the world on a natural level.
为什么地震预测那么困难？对这个问题不能做出最后的答复，因为我们至今没有对地震成因的一个确定的理论。
Why is prediction so difficult? This question cannot be answered conclusively, as we do not yet have a definitive theory of the seismic source.
但为了表明“为什么”这个词并非没有歧义，而且随着情景的变化，不同种类的答案都是对它的恰当答复，就需要略微思索一下。
However, very little reflection is needed to reveal that the word "why" is not unambiguous and that with varying contexts different sorts of answers are relevant responses to it.
但为了表明“为什么”这个词并非没有歧义，而且随着情景的变化，不同种类的答案都是对它的恰当答复，就需要略微思索一下。
However, very little reflection is needed to reveal that the word "why" is not unambiguous and that with varying contexts different sorts of answers are relevant responses to it.
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