CNN新闻英语第 78 课：Choice of Sunscreen 防晒霜--肌肤的好朋友-1

ROWLAND 罗兰德
Searching, searching, searching. For what? The perfect sunscreen. SPF 15, 30, 45. UVA, UVB.Parsol 1789. Zinc oxide. What does it all mean? We asked dermatologist Dr. Rutledge Forney to help us cope with the sun. Look at all these sunscreens here, a pretty good selection? 找啊找。找什么呢？理想的防晒霜。SPF值15，30，45，UVA, UVB， Parsol 1789， 氧化锌，这些都表示什么意思？为此，我们请来了皮肤科医生茹特莱治·福内帮助我们对抗炎炎烈日。看看这里这么多的防晒霜，选哪种比较好呢?

DR. RUTLEDGE FORNEY, DERMATOLOGIST 茹特莱治·福内，皮肤科医生
There's a lot here to choose from, isn't there? 这里可选用的防晒霜品种很多，不是吗？

ROWLAND 罗兰德
A good starting point, SPF, sun protection factor. Take a look at Blue Lizard over here. We have the 30 right next to a banana boat with 15. So which one do you go for? 一个好的着手点是SPF值，太阳保护指数。看一下这个"蓝蜥蜴"。它的SPF值为15，而"香蕉船"右边的防晒霜值SPF为30。你会选择哪一个？

FORNEY 福内
Well, I advise all my patients for any sort of direct sun exposure in sports or gardening or anything by the beach that they use a 30 or higher. 好吧，我给病人的建议是：如果因为运动，做园艺，或身处海滩而令自己直接暴露于太阳之下，那就要使用SPF值为30或者数值更高的防晒霜。

ROWLAND 罗兰德
We need the higher SPF, she says, because most of us don't put enough on, or put it on often enough. We hear about UVA, UVB. What's the difference? And does it matter if we have protection against both? 她说，我们需要SPF值更高的防晒霜，因为我们中的大多数人常常涂抹时不够量或不够次数。我们听说过UVA与UVB这两种紫外线。但它们有什么区别呢？让皮肤远离它们对我来说真的那么重要吗？

FORNEY 福内
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。

ROWLAND 罗兰德
That's worth repeating. UVB rays burn and cause melanoma skin cancer. The higher the SPF rating, the more you block those deadly rays. UVA ages us, gives us wrinkles. Ninety-five percent of the sun's rays are UVA. They don't burn, but they do damage skin. Is there any system to know how much protection you're getting against the UVA? 有必要再强调一下。UVB射线会灼伤皮肤，并且导致恶性黑素瘤。防晒霜的SPF值越高，就能越多地阻隔这种致命射线。UVA射线则令我们的皮肤老化，产生皱纹。95%的太阳光线都是UVA射线。它们不会灼伤皮肤，但确实会对皮肤造成损害。有没有一种方法可以帮你了解对UVA的防护达到什么程度？

FORNEY 福内
Not yet, And that's why we know that Parsol 89 is very effective against UVA.
还没有，同时我们知道Parsol 89 可以有效对抗UVA。