黄褐斑

例句：

1. 1. She has developed a few wrinkles around her eyes from sun exposure.
   她由于日晒已经出现了几道眼周皱纹。
2. 2. The doctor advised him to use sunscreen regularly to prevent future wrinkles.
   医生建议他定期使用防晒霜以防止未来的皱纹。
3. 3. The patient had a small nevus on his forehead that was gradually growing larger.
   病人额头上有一个逐渐变大的小痣。