brush someone/something off
phrasal verb with brush verb uk/brʌʃ/ us/brʌʃ/
C1 （用手或刷子）把…刷干净，把…掸净;刷掉，掸去
to remove dust or dirt from someone or something by using your hands or a brush
He brushed the snow off his coat. 他掸去大衣上的雪。
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