a can of worms
成語所屬單字can
a can of worms — 慣用語
1. A situation that causes many unexpected problems when you start to deal with it.
1.慣用語
釋義
棘手問題
A situation that causes many unexpected problems when you start to deal with it.
例句
Asking about his past opened a can of worms.
The new policy turned out to be a can of worms for the company.