brush off
phrasal verbbrush off
brush somebody off
to rudely ignore somebody or refuse to listen to them 不理睬某人；打发
brush somebody/yourself off
(British English brush somebody/yourself down)
to make somebody/yourself tidy, especially after you have fallen, by brushing your clothes, etc. with your hands 掸净某人／自己，拂去衣服上的灰尘（尤指跌倒后）