不生病的小秘密-和新鲜空气交朋友
时间：2016-01-07 05:25:39
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（单词翻译）
Secrets To Never Getting Sick
Make Friends With Fresh Air
Common wisdom has it that staying indoors, where it's warm and toasty, is easier on your immune system than being outside in the cold.
Problem is, being inside puts you in close constant contact with other people -- and their germs.
Not only does escaping into the fresh air give you abreak from all those germs circulating inside, but going for a stroll canactually boost your
immunity1.
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