lancing

例句：

1. 1. She was lancing her fingernails with a needle.
   她用针在扎手指。
2. 2. The doctor lanced the wound with a scalpel.
   医生用手术刀刺破了伤口。
3. 3.He lanced his arm with a knife and cut it open.
   他用刀刺伤了手臂，把它切开了。