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Hurray for warm days and long, summer evenings! The sun is good for us - in fact, researchers at Sweden's Karolinska Institute say that avoiding the sun can be as bad for you as smoking. Here's why it's good to spend time in the sunshine... 致阳光明媚的日子！致漫长的夏夜！太阳有益身体健康--事实上，瑞典卡罗林斯卡研究所的研究员表示，避免与阳光接触可能会带来与吸烟一样的影响。那为什么晒太阳有益身体健康呢？ | 
