Nothing soothe me more after a long and maddening course of pianoforte recital than to sit and have my teeth drill 在漫长而又疯狂的钢琴独奏会之后，没有一样事情比坐在椅子上让牙科医生钻牙齿更为镇静。
2.
The paper has developed a new laser therapeutic instrument for dentistry . it can incise and drill in tooth in place of tooth drill 本文研制了一种新型激光牙科治疗仪，能够对牙齿进行切割和钻孔，代替牙钻进行治疗。
