单词UVA
na.: 紫外线A；长波紫外线
网络: 弗吉尼亚大学；长波紫外光；紫外线长波
长波紫外线；紫外线 A 波段:
ultraviolet rays that are relatively long
(=ultraviolet A-rays)日光紫外线的一个波段,会导致皮肤变黑,老化
Conventional sunscreens do not protect as well against UVA, and the SPF is not reflective of its harmful effects.
一般的防晒霜并不能抵抗UVA带来的伤害，而且SPF值并不能反映其有害影响。
Is there any system to know how much protection you"re getting against the UVA?
有没有一种方法可以帮你了解对UVA的防护达到什么程度？
He suggests choosing a broad-spectrum sunscreen, which blocks both types of UV rays, UVA and UVB, with an SPF of at least 30.
选择一款能够阻挡UVA和UVB两种射线的广谱防晒产品吧，切记SPF值要至少达到30以上。
Administrators who want UVA to continue as a first-rate institution see raising tuition as the only solution.
为保持弗吉尼亚大学的一流大学地位，学校管理层所能找到的解决方法唯有提高学费。
FORNEY UVB protects against burning, and UVA protects against aging. And of course, you want to have both levels of protection.
UVB防晒霜防止皮肤灼伤，而UVA防晒霜对抗皮肤老化。当然，你会希望同时拥有这两方面的皮肤保护。
Cancer isn"t the only problem associated with UV exposure. UVA damage to the dermis is the main factor in premature skin aging.
癌症并不是紫外线暴晒仅有的一种问题，UVA对真皮的伤害是皮肤过早老化的主要因素。
They beam UVA rays, enough of them that skin cancer, at least the less deadly type, is up dramatically among teens and those in their 20s.
它会导致UVA的直射，当UVA足够多时，就会引发皮肤癌，虽然也是不致命的那种，而这种情况在青少年以及20多岁的青年人中呈显著上升趋势。
But it"s all UVA, and significantly, that UVA has no ability to make vitamin D in your skin.
至关重要的一点就在于UVA是无法在你的皮肤内制造维生素D的。
Too much exposure to both UVA and UVB rays raises your risk of skin tumors, including a form of cancer called squamous cell carcinoma.
过多地暴露在UVA和UVB下会增加患皮肤瘤的危险，包括患鳞状细胞癌的危险。
The influence of nicotinamide on melanosome movement velocity and its distribution in UVA irradiated human skin melanocytes were studied.
研究了烟酰胺对经UVA照射后人皮肤黑素细胞中黑素小体运动速率和黑素小体分布的影响。