have a finger in the pie

例句：

1. 1. They have a finger in every aspect of the project.
   他们在项目的每一个方面都插了一手。
2. 2.The new policy has been getting involved in various aspects of society.
   新的政策已经在社会的各个方面介入。
3. 3.He's always getting involved in local politics.
   他总是参与当地的政治活动。