... 文学/艺术/军事/历史 防晒产品之防护效果表示方式 一、UVB 之防护效果 抗UVB 之效果指标为防晒系数(Sun Protection Factor, SPF),系指经紫外线照射,受防晒 剂保护皮肤产生红斑之最少紫外线量(minimal erythema do...
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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.
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