I'm sure you all do know people who believe in it.

我肯定你们都认识一些相信这个观点的人

耶鲁公开课 - 死亡课程节选

I worked at a grocery store, and I know people who work at clothing stores.

我在一个杂货店工作过，我也认识一些在服装店工作的人。

招聘兼职员工 - SpeakingMax英语口语达人

I know a few people who play tennis and soccer just with other people.

我认识一些人，他们会与其他人打网球或者踢足球。

伯克利的水上运动 - SpeakingMax英语口语达人