the whys and wherefore

• 原因； 理由

the whys and wherefore的用法和样例：

例句

1. This is the root cause of poverty.
   这是贫穷的根本原因。
2. He did it for the following reasons.
   他这样做有下面几个原因。
3. These are the reasons why we do it.
   这些就是我们为什么要做这事的理由。
4. There was good reason to discredit the witness.
   有充分理由不相信那位证人。