Mature milk supplies nutrients, hormones, and substances that provide the infant with immunity against infectious agents.
乳提供营养素、激素和帮助婴儿免疫力以抵御感染因子的物质。
Mature milk supplies nutrients, hormones, and substances that provide the infant with immunity against infectious agents.
乳提供营养素、激素和帮助婴儿免疫力以抵御感染因子的物质。
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