You cannot take a day off without authorization.

未经批准你不得休假。

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

虽然那位第一流的职业骑手有赢得比赛的胜利, 但他的身体感到不舒服, 结果未得名次。

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

尽管那位第一流的赛马职业骑手有赢得比赛的胜利，但他感到身体不舒服，结果未得名次。