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下午几点后没紫外线

更新时间: 2020-11-04 00:00:00     

紫外线是一天24小时都有的,只是不同时段的紫外线强度不同而已。

紫外线过敏重在预防,应注意以下几点,夏季在紫外线最强的上午9点到下午4点这个时段,尽量避免户外活动。

关键词: 下午 紫外线

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