prick off

例句：

1. 1.She pricked off the needle carefully before sewing.
   她在缝纫前小心翼翼地刺破了针。
2. 2.The thief pricked off his finger with a knife.
   这个小偷用刀刺破了手指。
3. 3. He pricked off the tip of his pen and began writing.
   他用笔尖刺出了笔尖，开始写字。