pho.to.sen.si.tiv.i.ty
n.（名词）【复数】 pho.to.sen.si.tiv.i.ties Sensitivity or responsiveness to light.感光性：对光的敏感和感应性Medicine An abnormally heightened response, especially of the skin, to sunlight or ultraviolet radiation, caused by certain disorders or chemicals and characterized by a toxic or allergic reaction.【医学】 感光过敏的：对光线或紫外线辐射不正常的高度感应，尤指皮肤，是由某些失调或化学物质引起的，症状为中毒或过敏反应
