desempolvar betyder på engelska

brush up▼(to improve a rusty or underdeveloped skill)
verb
[UK: brʌʃ ʌp] [US: ˈbrəʃ ʌp]

dust [dusted, dusting, dusts]▼((intransitive) to clean by removing dust)
verb
[UK: dʌst] [US: ˈdəst]

dust off▼(to remove dust from something)
verb