rude and unfriendly

She has a rather abrasive manner. 她的态度相当粗暴。

He can sometimes be abrasive in meetings. 他开会时有时会变得相当生硬粗暴。

An abrasive substance is slightly rough, and often used for cleaning surfaces.

an abrasive cleaner/powder/liquid 摩擦除垢器／粉／液

a substance used for rubbing away the surface of something, usually to clean it or make it shiny

You'll need a strong abrasive for cleaning this sink. 你得用强力磨料才能把这个洗碗槽擦洗干净。