You cannot take a day off without authorization.

未经批准你不。

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最有希望赢比赛的胜利, 但他的身不舒服, 结果未名次。

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最有希望赢比赛的胜利，但他身不舒服，结果未名次。