pho.to.ag.ing

n.（名詞）
The process by which skin is changed or damaged as a result of exposure to ultraviolet radiation in sunlight and other sources.
日照老化，光致老化：皮膚因為暴露在太陽或其它光源的紫外線輻射下而受到改變或損害的過程
The long-term effects of this process on the skin, as wrinkles, discoloration, or susceptibility to cancer.
光致老化現(xiàn)象：光致老化過程對皮膚所造成的長期影響，像是皺紋、變色或是罹患癌癥