be mixed up with/in something idiom usually disapproving
卷入；与…有牵连
to be connected with a bad or unpleasant person or thing
Please don't get mixed up with him. You'll regret it if you do. 请别和他混在一起，不然你会后悔的。
I knew someone who was mixed up in that corruption scandal. 我认识的某个人与那件贪污丑闻有牵连。