However, most lip vermillion cancers result from chronic sun damage and are associated with actinic cheilitis, a precancerous rough patch on the lip.

但是，红的癌是由慢日光损害导致的且和日晒炎（即嘴上出现癌前粗糙斑块）有关。

Uh...actinic keratosis is, uh, a premalignant lesion.

光线角化病是 呃 一种癌前病变。