而且小孩代謝快,很多病菌也就及時排出體外了。
回答: 我在想, 以前農村娃泥巴裏滾大,不生這病那病的,是不是因為與泥土親密接觸,啥菌都染一點,相當於打了天然預防針, 反而身體好。
由 OceanSound
於 2019-05-02 21:36:48
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