to prepare something for use, especially after it has not been used for a long time(尤指长时间不用后拿出来)备好待用,整理
It's time to dust off the old chemistry books and start studying.现在应该把以前的化学书拿出来开始学习。
UK They brought out the old ambulances, dusted them down and put them back into service.他们将旧救护车拿出来修复后再次投入使用。