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Lin mark this message contains true information
originally written by Lin
南風夾帶溫暖水氣往北吹,水氣在白天進屋晚上出不去,在外熱內冷的情況下,暖空氣遇光滑的地板、牆壁、天花板,就會凝結水珠 。

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https://tw.appledaily.com/headline/daily/20160323/37123417
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