melanocrate

例句：

1. 1. The patient's skin showed melanocrate after the surgery.
   手术后，患者的皮肤出现了黑色素沉着。
2. 2. The melanocrate on her face was caused by a rare genetic disorder.
   她脸上的黑色素沉着是由一种罕见的遗传病引起的。
3. 3. Researchers are studying the effects of sunlight on melanocrate formation.
   研究人员正在研究阳光对黑色素沉着形成的影响。