day in day out

US /deɪ ɪn deɪ aʊt/
UK /deɪ ɪn deɪ aʊt/
"day in day out" picture
1.

日復一日, 每天

continuously or repeatedly over a long period of time

:
He does the same boring job day in day out.
日復一日地做著同樣無聊的工作。
The factory produces thousands of units day in day out.
這家工廠日復一日地生產數千件產品。