刮擦声

例句：

1. 1.The dog is scratching at the door to get in.
   狗在抓挠门想进来。
2. 2. She scratched her arm and it stung.
   她抓挠了手臂，很疼。
3. 3. The cat scratched the wallpaper on the wall.
   猫抓破了墙上的墙纸。