除去…的灰尘
dust sb / sth off
to remove dust, dirt, etc. from sb / sth
For the concert, he dusted off some of his old hits.为了这次音乐会,他重新捡起了他的一些曾红极一时的老歌。
释义来自《牛津高阶英汉双解词典》第 9 版