过度暴露于紫外线（UV）辐射下，如阳光，晒黑机，或日光灯。
Overexposure to ultraviolet ( UV) radiation, such as from sunlight, tanning booths, or sunlamps.
阳光能够刺激黑色素细胞产生黑素，这是因为黑素要在紫外线的辐射下保护我们的身体。
Sunlight is therefore a stimulus for melanocytes to produce melanin because they are trying to protect the body from UV rays.
阳光下活动减少意味着暴露于紫外线辐射的时间缩短，而紫外线辐射会生成自由基，对机体造成损害并加速组织衰老。
Reducing the time spent in sunlight helps minimise exposure to UV radiation, which creates free radicals known to damage and age tissues prematurely.
少数容易实施的阳光安全措施可预防许多由紫外线辐射造成的癌症和其它死亡以及疾病负担，世卫组织说。
A few easy-to-implement sun safety measures could prevent much of the cancer and other death and disease burden due to UV radiation, WHO says.
维生素D的主要来源是通过阳光中的紫外辐射在皮肤中合成的。
The main source of vitamin D is exposure to ultra-violet radiation in sunlight, which produces vitamin D in the skin.
阳光经过雪、沙漠，或水的反射之后可以增加紫外线辐射，增加眼部损伤(如白内障)的危险性。
Sunlight reflecting off snow, sand, or water further increases exposure to UV radiation, increasing your risk of developing eye problems such as cataracts.
当皮肤色素沉着增多，所以需要暴露于阳光下紫外线B辐射的足够时间以合成足够数量的维生素d。
As skin pigmentation increases, so does the period of exposure to ultraviolet B radiation from sunlight needed to synthesise adequate amounts of vitamin d.
研究了在模拟太阳光和高压汞灯作用下，不同浓度的光催化剂和紫外光辐射强度对孔雀绿废液的光催化降解反应。
The photocatalytic degradation reactions of peacock green dye were studied with photocatalyst of different concentration and UV radiation strength under simulated sunlight and UV lamp.
臭氧屋阻挡了阳光中大量有害的紫外线辐射。
The ozone layer blocks much of the sun's dangerous ultraviolet radiation.
当皮肤暴露在阳光下，紫外线辐射会引发游离原子团的形成，转而破坏皮肤细胞中的DNA， 引起肿瘤的生长。
When the skin is exposed to sunlight, the radiation triggers the formation of free radicals which, in turn, damages the DNA in skin cells, causing tumours to grow.
晒伤：一种急性皮肤炎症，由来自太阳光或其它光源的紫外辐射过度照射引起。 收藏。
Sunburn: Acute skin inflammation caused by overexposure to ultraviolet radiation from sunlight or other sources.
同时考察了与紫外光辐射照度相当的太阳光对苯酚废水的氧化结果。
The effects of the ultraviolet and the sun-light on the phenol degradation were compared.
本文讨论了利用自动太阳光谱仪测量地面的紫外辐射光谱，并进一步计算了NO_2的光分解系数。
We measured UV radiation spectrum reaching the ground by the Automatic Solar Spectrophotometer, and calculated NO2 photolysis rate further.
考虑到紫外线导致皮肤癌的危险，美国皮肤科医学会并不推荐暴露于阳光辐射或使用室内晒黑装置。
Because of skin cancer risk from ultraviolet (UV) radiation, AAD does not recommend unprotected exposure to radiation from the sun or from indoor tanning devices.
对那些围绕两颗星球转动的行星来说（像我们一样），星球上的突发有害的辐射可能会导致植物自发进化出他们的紫外屏障来阻挡阳光。
For planets orbiting two stars like our own, harmful radiation from intense stellar flares could lead to plants that develop their own UV-blocking sun-screens, " he said."
有效阻隔阳光反射、电视、电脑等有害辐射及紫外线，多重修复受损细胞，并使得肌肤逐渐呈现如同凝脂般的白皙。
Effectively protect skin from harmful radiation and UV from sunlight, TV and computer, powerfully repair damaged cells, and make skin white and clear after persistent use.
有效阻隔阳光反射、电视、电脑等有害辐射及紫外线，多重修复受损细胞，并使得肌肤逐渐呈现如同凝脂般的白皙。
Effectively protect skin from harmful radiation and UV from sunlight, TV and computer, powerfully repair damaged cells, and make skin white and clear after persistent use.
应用推荐