像住在東北方向的人,,這是非常困難得到陽光的. 要麽日照天數少,或即使有陽光,但外麵很冷,不太敢在十幾度的溫度下,到外麵去以獲得自然的VitD.
像住在東北方向的人,,這是非常困難得到陽光的. 要麽日照天數少,或即使有陽光,但外麵很冷,不太敢在十幾度的溫度下,到外麵去以獲得自然的VitD.
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