to rub sth by accident so that it gets damaged or hurt 擦坏；擦伤；刮坏；蹭破
~ sth
She fell and scraped her knee.
她摔了一跤，把膝盖蹭破了。
~ sth + adv./prep.
I scraped the side of my car on the wall.
我车的一侧被墙刮了。
Sorry, I’ve scraped some paint off the car.
抱歉，我把车刮掉了一块漆。
The wire had scraped the skin from her fingers.
她的手指头让金属丝刮掉了皮。
[I, T] to make an unpleasant noise by rubbing against a hard surface; to make sth do this （使）发出刺耳的刮擦声
(+ adv./prep.)
I could hear his pen scraping across the paper.
我听得见他的钢笔在纸上沙沙地响。
We could hear her scraping away at the violin.
我们听得见她正一个劲儿吱吱呀呀地拉小提琴。
~ sth (+ adv./prep.)
Don’t scrape your chairs on the floor.
别把椅子在地板上蹭得嘎吱嘎吱响。