在我的皮肤科医生的建议下，我每天都会在脸上和脖子上涂上防晒系数为15或30 的防晒霜。
For everyday, at my dermatologist's recommendation, I wear a sunscreen of SPF 15 or 30 on my face and neck.
一种防护系数为30的防晒霜使你能够待在太阳底下而不被晒伤。
A sunscreen with a protection factor of 30 allows you to stay in the sun without burning.
防晒系数为60的防晒霜可能会比防晒系数只有30的要好，但这也没有必要，而且防晒系数为60的防晒产品所达到的效果并不是防晒系数为30的两倍。
A sunscreen with an SPF of 60 might be better than one with an SPF of 30, but not necessarily - and the SPF 60 product isn't likely to be twice as effective as the SPF 30 product.
《药物和疗法公报》的编辑艾克博士说，如果人们想避免皮肤被阳光灼伤并预防皮肤癌，就应该涂抹系数为30的防晒霜。
If people wish to prevent sunburn and the risk of skin cancer, they should slap on factor 30, said Dr Ike Iheanacho, editor of the DTB.
使用得当的防晒系数为8或更高的防晒霜在完全阻挡紫外线辐射的同时也阻止了维生素d的合成。
Used properly, sunscreens with an SPF of 8 or higher completely block UVB radiation and prevent synthesis of vitamin d.
很多皮肤科的专家也推荐使用防晒系数为30及30以上的防晒产品。
Many dermatologists recommend using a product with an SPF of 30 or more.
我的皮肤非常敏感，所以我用防晒系数为15的防晒油。
I have a very sensitive skin and so I use a factor 15 suntan oil.
朱恩：这支无色唇膏的防晒系数为100。你也需要的。
June: This ChapStick has an SPF of 100. You'll need that, too.
朱恩：这支无色唇膏的防晒系数为100。你也需要的。
June: This ChapStick has an SPF of 100. You'll need that, too.
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