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如果你想看看冰箱里的水汽,你只需要往冰箱里面吹热风,它就会很好的蒸发水汽。当一个冷瓶子从冰箱里拿出来后,一些有趣的事情就发生了。玻璃瓶变得潮湿了。问题是:这些湿气是从哪儿来的?当然,瓶子不会漏,难道是它在出汗?