have a finger in the pie
US /hæv ə ˈfɪŋɡər ɪn ðə paɪ/
UK /hæv ə ˈfɪŋɡər ɪn ðə paɪ/

1.
事事插手, 参与其中
to be involved in something, especially in a way that is not entirely welcome or is for one's own benefit
:
•
She seems to have a finger in every pie at the office, always knowing what's going on.
她似乎在办公室里事事插手,总是知道发生了什么。
•
The politician was accused of trying to have a finger in the pie of the new development project for personal gain.
这位政客被指控试图在新的开发项目中插手以谋取私利。