防晒霜可以阻止导致晒伤的短波紫外线，更新的一些配方还可以阻止导致皱纹和老化的长波紫外线。
Sunscreens do block the UVB radiation that causes sunburn, and more recent formulas also block the UVA radiation that causes wrinkles and aging.
无需再涂抹氧化锌使自己脸色惨白，只要防止短波紫外线UVB和长波紫外线UVA即可，艾米·德里克博士如是说，她是伊利诺斯州巴灵顿市一名具备医师资格认证的皮肤科医生。
No need to go white-faced wearing zinc oxide anymore, just to protect against short UVB rays and longer UVA rays, said Dr. Amy Derick, a board-certified dermatologist in Barrington, Ill.
结论：毫米波疗法及短波紫外线治疗变应性鼻炎效果较好，且紫外线治疗简单、快捷；
CONCLUSION: Millimeter wave and short-wave ultraviolet rays are much more effective than radiofrequency wave in the treatment of allergic rhinitis and ultraviolet irradiation is simple to perform.
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