off-day

You cannot take a day off without authorization.

未经批准你不得假。

We work on Saturdays and have a day off in lieu during the week.

我们每星期六上班，平时换一天。

Although favorite to win the race, the champion jockey had an off day and was unplaced.

虽然那位第一流职业手有希望赢得比赛胜利, 但他身体感到不舒服, 结果未得名次。

Although favourite to win the race, the champion jockey had an off day and was unplaced .

尽管那位第一流赛马职业手有希望赢得比赛胜利，但他感到身体不舒服，结果未得名次。