他并不直接认识他们，但久闻他们的大名。

He did not know them personally, but he was familiar with their reputation.

《柯林斯英汉双解大词典》

在每个认识他们的人看来，他们似乎是一对佳偶。

To everyone who knew them, they seemed an ideal couple.

《柯林斯英汉双解大词典》

我认识他们，他们也认识我。

I know them all, and they know me.

youdao

So if you haven't already, just glance at the person next to you, or say hello if you don't know them.

如果你还没有做好，那就看看你旁边的人,如果你不认识他们就跟他们打个招呼。

哈佛公开课 - 计算机科学课程节选

But a lot of times, a lot of people just find internships through, like, people their parents know

不过，大多数情况下，许多人是通过人脉找到实习，例如他们父母认识的人啦，

多样的实习机会 - SpeakingMax英语口语达人

Nobody, of course, knew this man but they knew people who might know people who would know this man.

当然这些人都不认识他，但他们认识其他人,这些人可能认识其他认识他的人。

耶鲁公开课 - 心理学导论课程节选