like a dog with a bone
成語所屬單字bone
like a dog with a bone — 慣用語
1. Very determined and unwilling to stop or give up.
1.慣用語
釋義
堅持不懈；不達目的不罷休
Very determined and unwilling to stop or give up.
例句
Once he starts a project, he is like a dog with a bone.
The reporter was like a dog with a bone, chasing the story.