it depends. 可以指谈恋爱, 还可以指工作上,普通朋友之间的交往。其实人与人之间的contact, communicate都可以叫做交往.
I prefer to associate with friends their own age.
我更喜欢与同龄的朋友交往。
are you seeing someone?
你在跟谁交往吗?
He associates with all sorts of people.
他和各种各样的人交往.
Never mix with those people.
不要跟那些人交往.