外電報道說：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.（她每天最少跑步半個小時以減輕精神壓力。）Do something to work off your frustration with the job or you'll become ill.（干點什么來減輕你工作上的挫折感，否則你會生病的。）
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