Martin wanted to know all the whys and wherefores .

马丁要知道所有的理由。

Tell me all the whys and wherefores .

把所有的理由和原因都告诉我。

We must always go into the whys and wherefores of anything .

我们对任何事情都要问一个为什么。

He spent ages explaining the whys and wherefores of the decision .

他用了很长时间来解释这一决定的原因和理由。

I told them the whys and wherefores of my action .

我告诉他们我行动的理由。