dust off
phrasal verbdust somebody/something off
to remove dust, dirt, etc. from somebody/something 除去…的灰尘 She got out the best china and dusted it off. 她拿出最好的瓷器，掸掉上面的灰尘。 He put down the box and dusted off his hands. 他放下盒子，掸去手上的灰尘。
to use something again after a long period of not using it 尘土飞扬： 长时间不使用后再次使用