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明明撑了伞,为什么还是晒黑了?
夏日炎炎,遮阳伞成了人们出门的标配。然而,很多人疑惑:明明撑了伞,为什么皮肤还是悄悄变黑了,甚至晒伤了?这把看似忠实的“保护伞”,可能并没有发挥你想象中的完美防护作用。今天,就让我们揭开遮阳伞防晒的秘密。
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