the bird has flown
成語所屬單字fly
the bird has flown — 慣用語
1. The person who was wanted or looked for has already escaped or left.
1.慣用語
釋義
人已逃脫
The person who was wanted or looked for has already escaped or left.
例句
When the police arrived at the hideout, the bird had flown.
We went to arrest him, but the bird had flown hours ago.