work off : 消除；去除

总奖金额为245万美金的网球大师系列赛辛辛那提站正选赛15日正式开赛，世界NO.1费德勒自温网之后将首次参赛，与他分在这一区的还有老对手萨芬和阿加西，不过两人将有望火拼争夺一个四强席位，而费德勒在晋级路上也有望遭遇基弗、柳比西奇等难缠对手。

外电报道说：Federer worked off the rust from a five-week layoff caused by a sore foot, and Roddick compensated for an undependable serve during their first-round wins Monday in the $2.45 million tournament.

句中的work off表示"消除；去除"的意思。例如：She works off stress by running for at least half an hour every day.（她每天最少跑步半个小时以减轻精神压力。）Do something to work off your frustration with the job or you'll become ill.（干点什么来减轻你工作上的挫折感，否则你会生病的。）