Some tropical termites use cultivated fungi to predigest food rather than microorganisms.

一些热带白蚁使用培养的真菌来预先消化食物，而不是微生物。

Plus, an adult's saliva can help predigest the food, making vitamins like B12 easier for the baby to absorb.So, mouth to mouth attachment has a history of intimacy, trust and closeness.

另外, 一个成年人的唾液可以帮助预防消化食物，使婴儿更容易吸收多种维生素如B12。所以, 嘴对嘴的接触有亲近, 信任和亲密的历史。