day off
US
UK day off n: (day of holiday from work)
SC 休息日 xiū xī rì
No, I can't come into the office today, it's my day off!
不行，今天来不了办公室，今天是我的休息日！
have an off day v expr: informal (perform poorly)
SC 状态不佳 zhuàng tài bù jiā
TC 狀態不佳
TC 狀態不佳
He is normally a great performer, but I think he was having an off-day.
他通常表现很好，但我认为今天状态不佳。