Telling a complete stranger about your life is difficult.

要对一个素昧平生的人谈自己的生活经历比较困难。

The women knew nothing of the dead girl. They were strangers.

这些妇女对那个死去的女孩一无所知。她们互不相识。

He is no stranger to controversy.

他是个颇具争议的人物。