Through Yale you know a lot of people and they don't have to be close friends but they are acquaintances.

通过耶鲁，你能认识很多人,这些人不一定是亲密的好朋友,他们只是相识的人。

耶鲁公开课 - 心理学导论课程节选

She's been your best friend for many years.

她毕竟是你这么多年的好朋友了。

If I were 实战 - SpeakingMax英语口语达人