Grinding material using a rotating burr in a mill or tool

用旋转的磨齿或磨锥研磨材料

Producing a rough raised edge (a burr) on a surface

在表面上产生毛刺

Pronouncing r-sounds with a rolled or trilled quality

以卷舌或颤音方式发出 r 音

Emitting a low, whirring or vibrating sound

发出低沉的嗡鸣或振动声