The police are reluctant to step in.

警察不愿插手干预。

I don't want him meddling in our affairs.

我不愿他插手我们的事。

He would not touch the matter.

他不愿插手这事。

The chairman felt that it was his place to intervene in the disagreement between two of his committee members.

主席觉得自己有责任插手停那两个委员之间的争执。