adj.紫外线的
n.紫外线
The ozone layer shields the earth from the sun's ultraviolet rays. 臭氧层保护地球不受太阳紫外线的辐射。
A suncream provides adequate protection against harmful ultraviolet rays. 使用防晒霜可以保护皮肤不受紫外线的伤害。
用作名词 (n.)What are infrared and ultraviolet rays? 什么是红外线和紫外线?