to go back a long way
01
认识很久了, 有很深的渊源
to have a long history or past relationship with someone or something
![to [go] back a long way definition and meaning](https://cdn.langeek.co/photo/44074/original/?type=jpeg "to [go] back a long way definition and meaning")
习语
例子
Tom and I go back a long way; we were neighbors as kids.
我和汤姆认识很久了；小时候我们是邻居。
02
由来已久, 历史悠久
to have been present for a long time, as in conflicts or business
习语
例子
The conflict between the two countries goes back a long way.
两国之间的冲突由来已久。
