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Season for traveling and outings
外出旅游与户外活动
Scenario: Exploring a city on foot is the best way to absorb the local culture. But strolling around also takes time and exposes your skin to UV rays.
适用情境：想要体验当地文化，在一个城市中徒步探索是最好的选择，然而，到处溜达不仅占了时间，也使我们的皮肤长时间暴露在阳光下。
SPF requirement: 30 or less
防晒系数: ≤30
Solution: Wearing a hat and long-sleeved clothes is sensible, but putting on a sunscreen with a broad-spectrum SPF of 30 is the ultimate protection, especially during the peak hours for sunrays between 10 am and 4 pm. However, sunscreen often degrades fast when exposed to the sun for more than an hour, so make sure you reapply it at least every 90 minutes.
防晒建议：带帽子、穿长袖都是明智选择，然而，终极保护还是需要防晒系数30的广谱防晒霜，特别是在日照最强烈的早10点至下午4点之间。需要注意的是，暴露在太阳下一小时以后，防晒霜的保护效果会迅速下降，所以，保险起见，建议至少每一个半小时重新涂抹一次防晒霜。
