ultraviolet radiation
/ˌʊltɹɐvˈaɪəlɪt ɹˌeɪdɪˈeɪʃən/
n
English · ultraviolet radiation中文 · 紫外线辐射Español · radiación ultravioletaFrançais · rayonnement ultraviolet
意味：Electromagnetic waves used especially to tan skin and in microscopy, medicine and lighting (fluorescent tubes).