日光性着色斑是一种其它类型的雀斑，发生在老年人中，与肤色无关。
Solar lentigines, the other types of freckles, occur among old people regardless of skin colour.
光化性角化病，也称日光性角化病，病损生长缓慢，而且除了皮肤上的斑块或小斑点，常常无任何症状或体征。
An actinic keratosis, also known as solar keratosis, enlarges slowly and usually causes no signs or symptoms other than a patch or small spot on your skin.
并非所有黑色素瘤患者的病情都能被控制，但减少在强日光或其他紫外线来源(如晒黑床)下暴露皮肤的几率将明显降低获得此致命疾病的可能性。
Not all melanomas can be prevented, but limiting exposure to strong sunlight and other sources of UV light like tanning beds can significantly reduce the risk of getting this very deadly cancer.
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