They explained that grapes and grape derivatives have a compound - a flavonoid - that helps protect human skin from the damaging effects of ultraviolet radiation.
他们解释,葡萄和葡萄的衍生产品中含有一种黄酮化合物的组合,它能够保护人类皮肤免受紫外线的伤害。
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These are prime hours for exposure to skin-damaging ultraviolet (UV) radiation from the sun, even on overcast days.