A kindergarten teacher apologizes to parents for using ultraviolet lamps, or UV lamps, on her students in Hangzhou, East China's Zhejiang province, May 22, 2012. The teacher, surnamed Dai, used the UV lamps to intimidate and punish children who misbehaved. She has been suspended from her post, and the local government launched an investigation. The 42 kids in the class received medical exams following the incident.
2012年5月22日中国东部浙江省一所幼儿园老师因将紫外线灯用于学生身上而向家长道歉。这位姓戴的老师用紫外线灯恐吓并惩罚表现不好的学生，现已被停职，当地政府已介入调查。这次事件后，班上42名学生也接受了医疗检查。
Ultraviolet rays are used to kill bacteria, viruses and mold spores. Exposure to UV light causes human skin to create Vitamin D, which helps bones absorb calcium. But excessive exposure can damage the DNA in skin cells and increase a person's risk for both melanoma and non-melanoma skin cancer.
紫外线是用来杀细菌，病毒，和霉菌孢子的。人体曝于紫外线灯下，人体皮肤会产生维他命D帮助人骨吸收钙。但是过度曝于紫外线下会伤害皮肤细胞的DNA，并且增加患黑色素瘤和非黑瘤皮肤癌的风险。
