fly on the wall
成語所屬單字wall
fly on the wall — 慣用語
1. a person who is able to watch events without being noticed, or a style of docume
1.慣用語
釋義
暗中觀察的人；實境紀錄片風格
a person who is able to watch events without being noticed, or a style of documentary that films people behaving naturally without their awareness of the camera.
例句
Yara said she would love to be a fly on the wall during that important meeting.
The documentary used a fly-on-the-wall style to capture life in the hospital.