unconnected例句

I can't believe that those two murders are unconnected.
我不相信那两桩谋杀案之间毫无关联。

She was known to have had personal problems unconnected with her marriage.
据悉，她有过一些与婚姻不相干的个人问题。

It was better to make it deal with something totally unconnected with its original subject.
顶好是把讲话的主题,改得跟从前毫不相干.