regenerated hairs

例句：

1. 1. Thepatient's hair has been regenerated after the surgery.
   手术后，患者的毛发已经再生。
2. 2.The scientist found that certain chemicals could regenerate hair follicles.
   科学家发现某些化学物质可以再生毛囊。
3. 3.The old man had lost his hair due to ageing, but now he has regenerated them.
   老人由于年老而失去了头发，但现在他已经重新长出了头发。