brush down

US /brʌʃ daʊn/
UK /brʌʃ daʊn/
"brush down" picture
1.

刷掉, 刷干净

to clean something by brushing it downwards

:
He used a stiff brush to brush down his muddy boots.
他用硬刷子刷掉他泥泞的靴子。
She would always brush down her coat before leaving the house.
她出门前总是刷掉外套上的灰尘。