Mr. Smith put his paper down, turned around, and said to the man, "Who are you? How do you know all that about me?"

史密斯先生放下报纸，转过身来对那个人说：“你是谁？你是怎么知道我这些事的？”

youdao

There is also an asymmetry here: you know who I am; in fact some people on these threads seem to know more about me than I do. But I have no idea who I am arguing with.

这里还存在着一种不对称：你们知道我是谁——事实上，这些板块里的一些人似乎比我还要了解我自己——而我却不知道自己在与什么人争论。

youdao

I appreciate the folks who come up to me and say, "you know, J."D., I don't know how you do it. I tried to keep a blog for a few months.

我十分感激那些来我博客留言的人们，他们说：“你了解的，J.”D.，我不知道你是怎样实现的，但我也在努力坚持，尝试在几个月的时间里持续更新一个博客。

youdao

And do you know how many times someone checked up on me to make sure I really was who I said I was?

FORBES: Of Manti Te'o, Lance Armstrong and The End of Trust