needle vibrator

例句：

1. 1. The doctor used a needle vibrator to relieve her pain.
   医生用针振动器来缓解她的疼痛。
2. 2.She applied the cream on her skin with a needle vibrator.
   她用针振动器将药膏涂在皮肤上。
3. 3. He used a needle vibrator to stimulate his injured arm.
   他用针振动器刺激他的受伤手臂。