Some examples of word usage: acquaintance
1. I have known him for years, but we are just acquaintances. (我认识他有好几年了,但我们只是泛泛之交。)
2. She is just an acquaintance, not a close friend. (她只是个泛泛之交,不是个亲近的朋友。)
3. I met an old acquaintance at the party last night. (昨晚在派对上碰到一个老相识。)
4. It's always nice to catch up with old acquaintances. (和老朋友聊聊天总是很愉快的。)
5. He is not just a colleague, he is also a good acquaintance. (他不只是个同事,也是个不错的泛泛之交。)
6. I bumped into an acquaintance at the grocery store this morning. (今天早上在杂货店里碰到一个泛泛之交。)