ultra violet

基本解释

Curing a coating by means of exposure to electromagnetic waves or particles such as infrared or ultra violet, or electron beam.
在电磁波或粒子如红外、紫外、电子束下涂料的固化。
Restoration experts have used ultra violet rays to shed new light on masterpieces by one of the Western World's greatest painters.
艺术品修复专家们开始尝试利用紫外线去照射一位伟大画家的作品。
The scientists at Rutgers University in New Jersey say a low to moderate intake of caffeine combined with exercise can be good for health and prevent damage caused by the Sun's ultra violet rays.
新泽西的科学家们称，适当的摄入少量咖啡因，同时保持运动，对健康是有好处的，可预防紫外线引起的皮肤伤。
blog.sina.com.cn

Ultraviolet light or radiation is what causes your skin to become darker in colour after you have been in sunlight. In large amounts ultraviolet light is harmful.