Some reasons

原因───reason;某些───some

I had a bad night; I went to bed early enough, but for some reason I couldn't get off to sleep.───我夜里睡得很不好, 上床相当早, 可是不知为什么睡不着.

I'm not learning Arabic for any special reason; I'm doing it for its own sake, because I enjoy it.───我学习阿拉伯语没有特别的理由, 就是 因为喜欢而学习.

I know the reason whereat you are displeased.───我知道你为什么不快.

I reckon she has good reason to feel smug.───我认为她洋洋得意必有其缘故.

He had reason to be pleased with himself, since he was one of only seven out of forty candidates who were successful.───他有理由沾沾自喜，因为他是40个候选人里仅有的7名成功者之一。

There's no other reason.───非有他故.

That is ( the reason ) why he raised the question.───这就是他所以提出问题的原因.

I really don't see any reason for changing it.───我真的不明白为什么要改变它。